isatty: Make it return true in Cygwin consoles on native Windows. * lib/isatty.c: Include <string.h>. (GetProcAddress): New macro. (GetNamedPipeClientProcessIdFuncType): New type. (GetNamedPipeClientProcessIdFunc): New variable. (QueryFullProcessImageNameFuncType): New type. (QueryFullProcessImageNameFunc): New variable. (initialized): New variable. (initialize): New function. (IsCygwinConsoleHandle): New function. (isatty): Invoke it. * doc/posix-functions/isatty.texi: Mention the issue.

Description:
reallocarray function that is glibc compatible.

Files:
lib/reallocarray.c
m4/reallocarray.m4

Depends-on:
extensions
xalloc-oversized
realloc-gnu
stdlib

configure.ac:
gl_FUNC_REALLOCARRAY
if test $HAVE_REALLOCARRAY = 0; then
  AC_LIBOBJ([reallocarray])
  gl_PREREQ_REALLOCARRAY
fi
gl_MODULE_INDICATOR([reallocarray])
gl_STDLIB_MODULE_INDICATOR([reallocarray])

Makefile.am:

Include:
<stdlib.h>

License:
LGPL

Maintainer:
all