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.

#!/bin/sh

# Test set-mode-acl on the file system of the build directory, which may be
# a local file system or NFS mounted.

. "${srcdir=.}/init.sh"; path_prepend_ .

TMPDIR=`pwd`
export TMPDIR

$BOURNE_SHELL "${srcdir}/test-set-mode-acl.sh"

Exit $?