Merge from gnulib

This incorporates:
2015-10-13 binary-io, u64, unistd: port to strict C
2015-09-26 c-ctype: do not worry about EBCDIC + char signed
2015-09-25 c-ctype: port better to z/OS EBCDIC
2015-09-25 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
* doc/misc/texinfo.tex, lib/binary-io.c, lib/c-ctype.h, lib/u64.c:
* lib/unistd.c, m4/gnulib-common.m4, m4/gnulib-comp.m4:
Copy from gnulib.

4 files changed, 58 insertions, 476 deletions

diff --git a/lib/binary-io.c b/lib/binary-io.c
index 8bbdb44d12..d828bcd015 100644
--- a/lib/binary-io.c
+++ b/lib/binary-io.c
@@ -1,3 +1,4 @@
 #include <config.h>
 #define BINARY_IO_INLINE _GL_EXTERN_INLINE
 #include "binary-io.h"
+typedef int dummy;
diff --git a/lib/c-ctype.h b/lib/c-ctype.h
index 50ebbb5829..15125308cb 100644
--- a/lib/c-ctype.h
+++ b/lib/c-ctype.h
@@ -78,82 +78,65 @@ extern "C" {
 # error "Only ASCII and EBCDIC are supported"
 #endif
 
-#define _C_CTYPE_SIGNED_EBCDIC ('A' < 0)
+#if 'A' < 0
+# error "EBCDIC and char is signed -- not supported"
+#endif
+
+/* Cases for control characters.  */
+
+#define _C_CTYPE_CNTRL \
+   case '\a': case '\b': case '\f': case '\n': \
+   case '\r': case '\t': case '\v': \
+   _C_CTYPE_OTHER_CNTRL
+
+/* ASCII control characters other than those with \-letter escapes.  */
 
 #if C_CTYPE_ASCII
-# define _C_CTYPE_CNTRL \
+# define _C_CTYPE_OTHER_CNTRL \
     case '\x00': case '\x01': case '\x02': case '\x03': \
-    case '\x04': case '\x05': case '\x06': case '\x07': \
-    case '\x08': case '\x09': case '\x0a': case '\x0b': \
-    case '\x0c': case '\x0d': case '\x0e': case '\x0f': \
-    case '\x10': case '\x11': case '\x12': case '\x13': \
-    case '\x14': case '\x15': case '\x16': case '\x17': \
-    case '\x18': case '\x19': case '\x1a': case '\x1b': \
-    case '\x1c': case '\x1d': case '\x1e': case '\x1f': \
-    case '\x7f'
+    case '\x04': case '\x05': case '\x06': case '\x0e': \
+    case '\x0f': case '\x10': case '\x11': case '\x12': \
+    case '\x13': case '\x14': case '\x15': case '\x16': \
+    case '\x17': case '\x18': case '\x19': case '\x1a': \
+    case '\x1b': case '\x1c': case '\x1d': case '\x1e': \
+    case '\x1f': case '\x7f'
 #else
    /* Use EBCDIC code page 1047's assignments for ASCII control chars;
       assume all EBCDIC code pages agree about these assignments.  */
-# define _C_CTYPE_CNTRL \
+# define _C_CTYPE_OTHER_CNTRL \
     case '\x00': case '\x01': case '\x02': case '\x03': \
-    case '\x05': case '\x07': case '\x0b': case '\x0c': \
-    case '\x0d': case '\x0e': case '\x0f': case '\x10': \
-    case '\x11': case '\x12': case '\x13': case '\x16': \
-    case '\x18': case '\x19': case '\x1c': case '\x1d': \
-    case '\x1e': case '\x1f': case '\x25': case '\x26': \
-    case '\x27': case '\x2d': case '\x2e': case '\x2f': \
-    case '\x32': case '\x37': case '\x3c': case '\x3d': \
-    case '\x3f'
+    case '\x07': case '\x0e': case '\x0f': case '\x10': \
+    case '\x11': case '\x12': case '\x13': case '\x18': \
+    case '\x19': case '\x1c': case '\x1d': case '\x1e': \
+    case '\x1f': case '\x26': case '\x27': case '\x2d': \
+    case '\x2e': case '\x32': case '\x37': case '\x3c': \
+    case '\x3d': case '\x3f'
 #endif
 
-/* Cases for hex letter digits, digits, lower, and upper, offset by N.  */
+/* Cases for lowercase hex letters, and lowercase letters, all offset by N.  */
 
-#define _C_CTYPE_A_THRU_F_N(n) \
+#define _C_CTYPE_LOWER_A_THRU_F_N(n) \
    case 'a' + (n): case 'b' + (n): case 'c' + (n): case 'd' + (n): \
-   case 'e' + (n): case 'f' + (n): \
-   case 'A' + (n): case 'B' + (n): case 'C' + (n): case 'D' + (n): \
-   case 'E' + (n): case 'F' + (n)
-#define _C_CTYPE_DIGIT_N(n) \
-   case '0' + (n): case '1' + (n): case '2' + (n): case '3' + (n): \
-   case '4' + (n): case '5' + (n): case '6' + (n): case '7' + (n): \
-   case '8' + (n): case '9' + (n)
+   case 'e' + (n): case 'f' + (n)
 #define _C_CTYPE_LOWER_N(n) \
-   case 'a' + (n): case 'b' + (n): case 'c' + (n): case 'd' + (n): \
-   case 'e' + (n): case 'f' + (n): case 'g' + (n): case 'h' + (n): \
-   case 'i' + (n): case 'j' + (n): case 'k' + (n): case 'l' + (n): \
-   case 'm' + (n): case 'n' + (n): case 'o' + (n): case 'p' + (n): \
-   case 'q' + (n): case 'r' + (n): case 's' + (n): case 't' + (n): \
-   case 'u' + (n): case 'v' + (n): case 'w' + (n): case 'x' + (n): \
-   case 'y' + (n): case 'z' + (n)
-#define _C_CTYPE_UPPER_N(n) \
-   case 'A' + (n): case 'B' + (n): case 'C' + (n): case 'D' + (n): \
-   case 'E' + (n): case 'F' + (n): case 'G' + (n): case 'H' + (n): \
-   case 'I' + (n): case 'J' + (n): case 'K' + (n): case 'L' + (n): \
-   case 'M' + (n): case 'N' + (n): case 'O' + (n): case 'P' + (n): \
-   case 'Q' + (n): case 'R' + (n): case 'S' + (n): case 'T' + (n): \
-   case 'U' + (n): case 'V' + (n): case 'W' + (n): case 'X' + (n): \
-   case 'Y' + (n): case 'Z' + (n)
-
-/* Given MACRO_N, expand to all the cases for the corresponding class.  */
-#if _C_CTYPE_SIGNED_EBCDIC
-# define _C_CTYPE_CASES(macro_n) macro_n (0): macro_n (256)
-#else
-# define _C_CTYPE_CASES(macro_n) macro_n (0)
-#endif
-
-/* Cases for hex letter digits, digits, lower, and upper, with another
-   case for unsigned char if the original char is negative.  */
-
-#define _C_CTYPE_A_THRU_F _C_CTYPE_CASES (_C_CTYPE_A_THRU_F_N)
-#define _C_CTYPE_DIGIT _C_CTYPE_CASES (_C_CTYPE_DIGIT_N)
-#define _C_CTYPE_LOWER _C_CTYPE_CASES (_C_CTYPE_LOWER_N)
-#define _C_CTYPE_UPPER _C_CTYPE_CASES (_C_CTYPE_UPPER_N)
-
-/* The punct class differs because some punctuation characters may be
-   negative while others are nonnegative.  Instead of attempting to
-   define _C_CTYPE_PUNCT, define just the plain chars here, and do any
-   cases-plus-256 by hand after using this macro.  */
-#define _C_CTYPE_PUNCT_PLAIN \
+   _C_CTYPE_LOWER_A_THRU_F_N(n): \
+   case 'g' + (n): case 'h' + (n): case 'i' + (n): case 'j' + (n): \
+   case 'k' + (n): case 'l' + (n): case 'm' + (n): case 'n' + (n): \
+   case 'o' + (n): case 'p' + (n): case 'q' + (n): case 'r' + (n): \
+   case 's' + (n): case 't' + (n): case 'u' + (n): case 'v' + (n): \
+   case 'w' + (n): case 'x' + (n): case 'y' + (n): case 'z' + (n)
+
+/* Cases for hex letters, digits, lower, punct, and upper.  */
+
+#define _C_CTYPE_A_THRU_F \
+   _C_CTYPE_LOWER_A_THRU_F_N (0): \
+   _C_CTYPE_LOWER_A_THRU_F_N ('A' - 'a')
+#define _C_CTYPE_DIGIT                     \
+   case '0': case '1': case '2': case '3': \
+   case '4': case '5': case '6': case '7': \
+   case '8': case '9'
+#define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
+#define _C_CTYPE_PUNCT \
    case '!': case '"': case '#': case '$':  \
    case '%': case '&': case '\'': case '(': \
    case ')': case '*': case '+': case ',':  \
@@ -162,6 +145,8 @@ extern "C" {
    case '?': case '@': case '[': case '\\': \
    case ']': case '^': case '_': case '`':  \
    case '{': case '|': case '}': case '~'
+#define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')
+
 
 /* Function definitions.  */
 
@@ -189,7 +174,6 @@ c_isalnum (int c)
     _C_CTYPE_LOWER:
     _C_CTYPE_UPPER:
       return true;
-
     default:
       return false;
     }
@@ -203,7 +187,6 @@ c_isalpha (int c)
     _C_CTYPE_LOWER:
     _C_CTYPE_UPPER:
       return true;
-
     default:
       return false;
     }
@@ -220,107 +203,9 @@ c_isascii (int c)
     _C_CTYPE_CNTRL:
     _C_CTYPE_DIGIT:
     _C_CTYPE_LOWER:
+    _C_CTYPE_PUNCT:
     _C_CTYPE_UPPER:
-
-    _C_CTYPE_PUNCT_PLAIN:
-#if '!' < 0
-    case '!' + 256:
-#endif
-#if '"' < 0
-    case '"' + 256:
-#endif
-#if '#' < 0
-    case '#' + 256:
-#endif
-#if '$' < 0
-    case '$' + 256:
-#endif
-#if '%' < 0
-    case '%' + 256:
-#endif
-#if '&' < 0
-    case '&' + 256:
-#endif
-#if '\'' < 0
-    case '\'' + 256:
-#endif
-#if '(' < 0
-    case '(' + 256:
-#endif
-#if ')' < 0
-    case ')' + 256:
-#endif
-#if '*' < 0
-    case '*' + 256:
-#endif
-#if '+' < 0
-    case '+' + 256:
-#endif
-#if ',' < 0
-    case ',' + 256:
-#endif
-#if '-' < 0
-    case '-' + 256:
-#endif
-#if '.' < 0
-    case '.' + 256:
-#endif
-#if '/' < 0
-    case '/' + 256:
-#endif
-#if ':' < 0
-    case ':' + 256:
-#endif
-#if ';' < 0
-    case ';' + 256:
-#endif
-#if '<' < 0
-    case '<' + 256:
-#endif
-#if '=' < 0
-    case '=' + 256:
-#endif
-#if '>' < 0
-    case '>' + 256:
-#endif
-#if '?' < 0
-    case '?' + 256:
-#endif
-#if '@' < 0
-    case '@' + 256:
-#endif
-#if '[' < 0
-    case '[' + 256:
-#endif
-#if '\\' < 0
-    case '\\' + 256:
-#endif
-#if ']' < 0
-    case ']' + 256:
-#endif
-#if '^' < 0
-    case '^' + 256:
-#endif
-#if '_' < 0
-    case '_' + 256:
-#endif
-#if '`' < 0
-    case '`' + 256:
-#endif
-#if '{' < 0
-    case '{' + 256:
-#endif
-#if '|' < 0
-    case '|' + 256:
-#endif
-#if '}' < 0
-    case '}' + 256:
-#endif
-#if '~' < 0
-    case '~' + 256:
-#endif
       return true;
-
     default:
       return false;
     }
@@ -363,107 +248,9 @@ c_isgraph (int c)
     {
     _C_CTYPE_DIGIT:
     _C_CTYPE_LOWER:
+    _C_CTYPE_PUNCT:
     _C_CTYPE_UPPER:
-
-    _C_CTYPE_PUNCT_PLAIN:
-#if '!' < 0
-    case '!' + 256:
-#endif
-#if '"' < 0
-    case '"' + 256:
-#endif
-#if '#' < 0
-    case '#' + 256:
-#endif
-#if '$' < 0
-    case '$' + 256:
-#endif
-#if '%' < 0
-    case '%' + 256:
-#endif
-#if '&' < 0
-    case '&' + 256:
-#endif
-#if '\'' < 0
-    case '\'' + 256:
-#endif
-#if '(' < 0
-    case '(' + 256:
-#endif
-#if ')' < 0
-    case ')' + 256:
-#endif
-#if '*' < 0
-    case '*' + 256:
-#endif
-#if '+' < 0
-    case '+' + 256:
-#endif
-#if ',' < 0
-    case ',' + 256:
-#endif
-#if '-' < 0
-    case '-' + 256:
-#endif
-#if '.' < 0
-    case '.' + 256:
-#endif
-#if '/' < 0
-    case '/' + 256:
-#endif
-#if ':' < 0
-    case ':' + 256:
-#endif
-#if ';' < 0
-    case ';' + 256:
-#endif
-#if '<' < 0
-    case '<' + 256:
-#endif
-#if '=' < 0
-    case '=' + 256:
-#endif
-#if '>' < 0
-    case '>' + 256:
-#endif
-#if '?' < 0
-    case '?' + 256:
-#endif
-#if '@' < 0
-    case '@' + 256:
-#endif
-#if '[' < 0
-    case '[' + 256:
-#endif
-#if '\\' < 0
-    case '\\' + 256:
-#endif
-#if ']' < 0
-    case ']' + 256:
-#endif
-#if '^' < 0
-    case '^' + 256:
-#endif
-#if '_' < 0
-    case '_' + 256:
-#endif
-#if '`' < 0
-    case '`' + 256:
-#endif
-#if '{' < 0
-    case '{' + 256:
-#endif
-#if '|' < 0
-    case '|' + 256:
-#endif
-#if '}' < 0
-    case '}' + 256:
-#endif
-#if '~' < 0
-    case '~' + 256:
-#endif
       return true;
-
     default:
       return false;
     }
@@ -489,107 +276,9 @@ c_isprint (int c)
     case ' ':
     _C_CTYPE_DIGIT:
     _C_CTYPE_LOWER:
+    _C_CTYPE_PUNCT:
     _C_CTYPE_UPPER:
-
-    _C_CTYPE_PUNCT_PLAIN:
-#if '!' < 0
-    case '!' + 256:
-#endif
-#if '"' < 0
-    case '"' + 256:
-#endif
-#if '#' < 0
-    case '#' + 256:
-#endif
-#if '$' < 0
-    case '$' + 256:
-#endif
-#if '%' < 0
-    case '%' + 256:
-#endif
-#if '&' < 0
-    case '&' + 256:
-#endif
-#if '\'' < 0
-    case '\'' + 256:
-#endif
-#if '(' < 0
-    case '(' + 256:
-#endif
-#if ')' < 0
-    case ')' + 256:
-#endif
-#if '*' < 0
-    case '*' + 256:
-#endif
-#if '+' < 0
-    case '+' + 256:
-#endif
-#if ',' < 0
-    case ',' + 256:
-#endif
-#if '-' < 0
-    case '-' + 256:
-#endif
-#if '.' < 0
-    case '.' + 256:
-#endif
-#if '/' < 0
-    case '/' + 256:
-#endif
-#if ':' < 0
-    case ':' + 256:
-#endif
-#if ';' < 0
-    case ';' + 256:
-#endif
-#if '<' < 0
-    case '<' + 256:
-#endif
-#if '=' < 0
-    case '=' + 256:
-#endif
-#if '>' < 0
-    case '>' + 256:
-#endif
-#if '?' < 0
-    case '?' + 256:
-#endif
-#if '@' < 0
-    case '@' + 256:
-#endif
-#if '[' < 0
-    case '[' + 256:
-#endif
-#if '\\' < 0
-    case '\\' + 256:
-#endif
-#if ']' < 0
-    case ']' + 256:
-#endif
-#if '^' < 0
-    case '^' + 256:
-#endif
-#if '_' < 0
-    case '_' + 256:
-#endif
-#if '`' < 0
-    case '`' + 256:
-#endif
-#if '{' < 0
-    case '{' + 256:
-#endif
-#if '|' < 0
-    case '|' + 256:
-#endif
-#if '}' < 0
-    case '}' + 256:
-#endif
-#if '~' < 0
-    case '~' + 256:
-#endif
       return true;
-
     default:
       return false;
     }
@@ -600,105 +289,8 @@ c_ispunct (int c)
 {
   switch (c)
     {
-    _C_CTYPE_PUNCT_PLAIN:
-#if '!' < 0
-    case '!' + 256:
-#endif
-#if '"' < 0
-    case '"' + 256:
-#endif
-#if '#' < 0
-    case '#' + 256:
-#endif
-#if '$' < 0
-    case '$' + 256:
-#endif
-#if '%' < 0
-    case '%' + 256:
-#endif
-#if '&' < 0
-    case '&' + 256:
-#endif
-#if '\'' < 0
-    case '\'' + 256:
-#endif
-#if '(' < 0
-    case '(' + 256:
-#endif
-#if ')' < 0
-    case ')' + 256:
-#endif
-#if '*' < 0
-    case '*' + 256:
-#endif
-#if '+' < 0
-    case '+' + 256:
-#endif
-#if ',' < 0
-    case ',' + 256:
-#endif
-#if '-' < 0
-    case '-' + 256:
-#endif
-#if '.' < 0
-    case '.' + 256:
-#endif
-#if '/' < 0
-    case '/' + 256:
-#endif
-#if ':' < 0
-    case ':' + 256:
-#endif
-#if ';' < 0
-    case ';' + 256:
-#endif
-#if '<' < 0
-    case '<' + 256:
-#endif
-#if '=' < 0
-    case '=' + 256:
-#endif
-#if '>' < 0
-    case '>' + 256:
-#endif
-#if '?' < 0
-    case '?' + 256:
-#endif
-#if '@' < 0
-    case '@' + 256:
-#endif
-#if '[' < 0
-    case '[' + 256:
-#endif
-#if '\\' < 0
-    case '\\' + 256:
-#endif
-#if ']' < 0
-    case ']' + 256:
-#endif
-#if '^' < 0
-    case '^' + 256:
-#endif
-#if '_' < 0
-    case '_' + 256:
-#endif
-#if '`' < 0
-    case '`' + 256:
-#endif
-#if '{' < 0
-    case '{' + 256:
-#endif
-#if '|' < 0
-    case '|' + 256:
-#endif
-#if '}' < 0
-    case '}' + 256:
-#endif
-#if '~' < 0
-    case '~' + 256:
-#endif
+    _C_CTYPE_PUNCT:
       return true;
-
     default:
       return false;
     }
@@ -736,7 +328,6 @@ c_isxdigit (int c)
     _C_CTYPE_DIGIT:
     _C_CTYPE_A_THRU_F:
       return true;
-
     default:
       return false;
     }
@@ -747,14 +338,8 @@ c_tolower (int c)
 {
   switch (c)
     {
-    _C_CTYPE_UPPER_N (0):
-#if _C_CTYPE_SIGNED_EBCDIC
-      c += 256;
-      /* Fall through.  */
-    _C_CTYPE_UPPER_N (256):
-#endif
+    _C_CTYPE_UPPER:
       return c - 'A' + 'a';
-
     default:
       return c;
     }
@@ -765,14 +350,8 @@ c_toupper (int c)
 {
   switch (c)
     {
-    _C_CTYPE_LOWER_N (0):
-#if _C_CTYPE_SIGNED_EBCDIC
-      c += 256;
-      /* Fall through.  */
-    _C_CTYPE_LOWER_N (256):
-#endif
+    _C_CTYPE_LOWER:
       return c - 'a' + 'A';
-
     default:
       return c;
     }
diff --git a/lib/u64.c b/lib/u64.c
index 04cf7a2994..1e3854ddcd 100644
--- a/lib/u64.c
+++ b/lib/u64.c
@@ -1,3 +1,4 @@
 #include <config.h>
 #define _GL_U64_INLINE _GL_EXTERN_INLINE
 #include "u64.h"
+typedef int dummy;
diff --git a/lib/unistd.c b/lib/unistd.c
index 6c6a8e268c..72bad1c052 100644
--- a/lib/unistd.c
+++ b/lib/unistd.c
@@ -1,3 +1,4 @@
 #include <config.h>
 #define _GL_UNISTD_INLINE _GL_EXTERN_INLINE
 #include "unistd.h"
+typedef int dummy;