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:
memmem() function: efficiently locate first substring in a buffer.

Files:

Depends-on:
memmem-simple

configure.ac:
gl_FUNC_MEMMEM
if test $HAVE_MEMMEM = 0 || test $REPLACE_MEMMEM = 1; then
  AC_LIBOBJ([memmem])
fi

Makefile.am:

Include:
<string.h>

License:
LGPLv2+

Maintainer:
libc, Eric Blake