Talk about "native Windows API", not "Win32". * lib/classpath.c: Update comments to mention native Windows. * lib/csharpexec.c: Likewise. * lib/dup2.c: Likewise. * lib/error.c: Likewise. * lib/fcntl.c: Likewise. * lib/filename.h: Likewise. * lib/findprog.c: Likewise. * lib/get-rusage-as.c: Likewise. * lib/get-rusage-data.c: Likewise. * lib/getpagesize.c: Likewise. * lib/javaexec.c: Likewise. * lib/msvc-inval.c: Likewise. * lib/msvc-nothrow.c: Likewise. * lib/nanosleep.c: Likewise. * lib/nonblocking.c: Likewise. * lib/printf-parse.c: Likewise. * lib/setlocale.c: Likewise. * lib/sigaction.c: Likewise. * lib/strerror_r.c: Likewise. * lib/tmpdir.c: Likewise. * lib/vasnprintf.c: Likewise. * lib/w32spawn.h: Likewise. * lib/waitpid.c: Likewise. * lib/stdio.in.h (fdopen, fopen, freopen): Likewise. * m4/locale-ar.m4: Likewise. * m4/locale-fr.m4: Likewise. * m4/locale-ja.m4: Likewise. * m4/locale-tr.m4: Likewise. * m4/locale-zh.m4: Likewise. * m4/printf.m4: Likewise. * tests/test-cloexec.c: Likewise. * tests/test-copy-acl.sh: Likewise. * tests/test-copy-file.sh: Likewise. * tests/test-file-has-acl.sh: Likewise. * tests/test-set-mode-acl.sh: Likewise. * tests/test-dup-safer.c: Likewise. * tests/test-dup2.c: Likewise. * tests/test-dup3.c: Likewise. * tests/test-fcntl.c: Likewise. * tests/test-nonblocking-pipe.h: Likewise. * tests/test-nonblocking-socket.h: Likewise. * tests/test-pipe.c: Likewise. * tests/test-pipe2.c: Likewise. * tests/test-spawn-pipe-child.c: Likewise. * doc/acl-resources.txt: Likewise. * lib/getaddrinfo.c (WINDOWS_NATIVE): Renamed from WIN32_NATIVE. * tests/test-poll.c (WINDOWS_NATIVE): Likewise. * tests/test-select.h (WINDOWS_NATIVE): Likewise. * lib/localcharset.c: Update comments to mention native Windows. (WINDOWS_NATIVE): Renamed from WIN32_NATIVE. * lib/localename.c: Likewise. * lib/progreloc.c: Likewise. * lib/relocatable.c: Likewise. * lib/poll.c (WINDOWS_NATIVE): Renamed from WIN32_NATIVE. (windows_compute_revents): Renamed from win32_compute_revents. (windows_compute_revents_socket): Renamed from win32_compute_revents_socket. * lib/select.c: Update comments to mention native Windows. (windows_poll_handle): Renamed from win32_poll_handle. * m4/threadlib.m4: Update comments to mention native Windows. (gl_THREADLIB_EARLY_BODY, gl_THREADLIB_BODY): Expect --enable-threads=windows instead of --enable-threads=win32. Set USE_WINDOWS_THREADS, not USE_WIN32_THREADS. * lib/glthread/lock.h: Update comments to mention native Windows. (USE_WINDOWS_THREADS): Renamed from USE_WIN32_THREADS. * lib/glthread/lock.c (USE_WINDOWS_THREADS): Renamed from USE_WIN32_THREADS. * lib/glthread/cond.h (USE_WINDOWS_THREADS): Likewise. * lib/glthread/cond.c (USE_WINDOWS_THREADS): Likewise. * lib/glthread/thread.h (USE_WINDOWS_THREADS): Likewise. * lib/glthread/thread.c (USE_WINDOWS_THREADS): Likewise. * lib/glthread/tls.h (USE_WINDOWS_THREADS): Likewise. * lib/glthread/tls.c (USE_WINDOWS_THREADS): Likewise. * lib/glthread/yield.h (USE_WINDOWS_THREADS): Likewise. * tests/test-cond.c (USE_WINDOWS_THREADS): Likewise. * tests/test-thread_create.c (USE_WINDOWS_THREADS): Likewise. * tests/test-lock.c (USE_WINDOWS_THREADS): Likewise. (TEST_WINDOWS_THREADS): Renamed from TEST_WIN32_THREADS. * tests/test-tls.c: Likewise. Rationale: Microsoft renamed the "Win32 API" to "Windows API", as it is available on both 32-bit and 64-bit Windows systems. But in gnulib, we treat Cygwin like a Unix platform, therefore the main line of distinction is between "native Windows" on one side and Unix/ POSIX systems on the other side. More details in <https://lists.gnu.org/archive/html/bug-gnulib/2012-01/msg00027.html>. Suggested by Paul Eggert.

/* Test for nonblocking read and write.

   Copyright (C) 2011-2012 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* A data block ought to be larger than the size of the in-kernel buffer.
   Working values of PIPE_DATA_BLOCK_SIZE, depending on kernel:

     Platform                        PIPE_DATA_BLOCK_SIZE

     Linux                           >= 63489
     Linux/SPARC                     >= 126977
     Linux/IA-64, Linux/MIPS         >= 253953
     Linux/PPC64                     >= 1048576
     FreeBSD, OpenBSD, MacOS X       >= 65537
     AIX                             >= 32769
     HP-UX                           >= 8193
     IRIX                            >= 10241
     OSF/1                           >= 262145
     Solaris <= 7                    >= 10241
     Solaris >= 8                    >= 20481
     Cygwin                          >= 65537
     native Windows                  >= 4097 (depends on the _pipe argument)
 */
#if defined __osf__ || (defined __linux__ && (defined __ia64__ || defined __mips__))
# define PIPE_DATA_BLOCK_SIZE 270000
#elif defined __linux__ && defined __sparc__
# define PIPE_DATA_BLOCK_SIZE 140000
#elif defined __linux__ && defined __powerpc__
# define PIPE_DATA_BLOCK_SIZE 1100000
#else
# define PIPE_DATA_BLOCK_SIZE 70000
#endif