Simplify code. Drop support for Borland C++ on Windows. Reported by Gisle Vanem <gisle.vanem@gmail.com>. * lib/accept4.c: Simplify 'defined _WIN32 || defined __WIN32__' to just 'defined _WIN32'. * lib/canonicalize-lgpl.c: Likewise. * lib/classpath.c: Likewise. * lib/clean-temp.c: Likewise. * lib/csharpexec.c: Likewise. * lib/ctime.c: Likewise. * lib/dosname.h: Likewise. * lib/dup2.c: Likewise. * lib/errno.in.h: Likewise. * lib/error.c: Likewise. * lib/euidaccess.c: Likewise. * lib/execute.c: Likewise. * lib/fcntl.in.h: Likewise. * lib/fcntl.c: Likewise. * lib/filename.h: Likewise. * lib/findprog.c: Likewise. * lib/flock.c: Likewise. * lib/fopen.c: Likewise. * lib/freopen.c: Likewise. * lib/fstat.c: Likewise. * lib/fsync.c: Likewise. * lib/gc-gnulib.c: Likewise. * lib/get-rusage-data.c: Likewise. * lib/getaddrinfo.c: Likewise. * lib/getdelim.c: Likewise. * lib/getdtablesize.c: Likewise. * lib/gethostname.c: Likewise. * lib/getlogin.c: Likewise. * lib/getlogin_r.c: Likewise. * lib/getopt.c: Likewise. * lib/getpagesize.c: Likewise. * lib/getpass.c: Likewise. * lib/getrusage.c: Likewise. * lib/gettimeofday.c: Likewise. * lib/glob.c: Likewise. * lib/inttypes.in.h: Likewise. * lib/isapipe.c: Likewise. * lib/javaexec.c: Likewise. * lib/link.c: Likewise. * lib/localcharset.c: Likewise. * lib/localename.h: Likewise. * lib/localename.c: Likewise. * lib/localtime.c: Likewise. * lib/lseek.c: Likewise. * lib/mbsinit.c: Likewise. * lib/mkdir.c: Likewise. * lib/msvc-nothrow.h: Likewise. * lib/nanosleep.c: Likewise. * lib/nl_langinfo.c: Likewise. * lib/nonblocking.c: Likewise. * lib/nproc.c: Likewise. * lib/open.c: Likewise. * lib/openpty.c: Likewise. * lib/pathmax.h: Likewise. * lib/pipe-filter-aux.c: Likewise. * lib/pipe-filter-gi.c: Likewise. * lib/pipe-filter-ii.c: Likewise. * lib/pipe.c: Likewise. * lib/pipe2.c: Likewise. * lib/poll.c: Likewise. * lib/popen.c: Likewise. * lib/posix_openpt.c: Likewise. * lib/printf-parse.c: Likewise. * lib/progreloc.c: Likewise. * lib/putenv.c: Likewise. * lib/read.c: Likewise. * lib/relocatable.c: Likewise. * lib/rename.c: Likewise. * lib/same-inode.h: Likewise. * lib/secure_getenv.c: Likewise. * lib/select.c: Likewise. * lib/sethostname.c: Likewise. * lib/setlocale.c: Likewise. * lib/sigaction.c: Likewise. * lib/sigprocmask.c: Likewise. * lib/sleep.c: Likewise. * lib/spawn-pipe.h: Likewise. * lib/spawn-pipe.c: Likewise. * lib/spawni.c: Likewise. * lib/stat-time.h: Likewise. * lib/stat-w32.c: Likewise. * lib/stat.c: Likewise. * lib/stdio.in.h: Likewise. * lib/stdio-impl.h: Likewise. * lib/stdio-read.c: Likewise. * lib/stdio-write.c: Likewise. * lib/stdlib.in.h: Likewise. * lib/strerror_r.c: Likewise. * lib/strftime-fixes.c: Likewise. * lib/sys_stat.in.h: Likewise. * lib/sys_types.in.h: Likewise. * lib/sys_wait.in.h : Likewise. * lib/system-quote.h: Likewise. * lib/system-quote.c: Likewise. * lib/tmpdir.c: Likewise. * lib/tzset.c: Likewise. * lib/uname.c: Likewise. * lib/unistd.in.h: Likewise. * lib/utime.in.h: Likewise. * lib/utime.c: Likewise. * lib/utimecmp.c: Likewise. * lib/utimens.c: Likewise. * lib/vasnprintf.c: Likewise. * lib/vma-iter.h: Likewise. * lib/vma-iter.c: Likewise. * lib/wait-process.c: Likewise. * lib/wcsftime.c: Likewise. * lib/wctype.in.h: Likewise. * lib/write.c: Likewise. * tests/nap.h: Likewise. * tests/test-cloexec.c: Likewise. * tests/test-dup-safer.c: Likewise. * tests/test-dup2.c: Likewise. * tests/test-dup3.c: Likewise. * tests/test-fcntl.c: Likewise. * tests/test-get-rusage-data.c: Likewise. * tests/test-getaddrinfo.c: Likewise. * tests/test-getlogin.h: Likewise. * tests/test-isatty.c: Likewise. * tests/test-localename.c: Likewise. * tests/test-mbrtowc-w32.c: Likewise. * tests/test-nonblocking.c: Likewise. * tests/test-nonblocking-pipe-main.c: Likewise. * tests/test-nonblocking-socket-main.c: Likewise. * tests/test-nonblocking-socket.h: Likewise. * tests/test-pipe.c: Likewise. * tests/test-pipe2.c: Likewise. * tests/test-poll.c: Likewise. * tests/test-pthread_sigmask1.c: Likewise. * tests/test-select.h: Likewise. * tests/test-sethostname2.c: Likewise. * tests/test-sigprocmask.c: Likewise. * tests/test-spawn-pipe-child.c: Likewise. * tests/test-stat-time.c: Likewise. * tests/test-system-quote-main.c: Likewise. * tests/test-utimens-common.h: Likewise. * tests/test-wcrtomb-w32.c: Likewise. * m4/csharpexec.m4 (gt_CSHARPEXEC): Likewise. * m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Likewise. * m4/javacomp.m4 (gt_JAVACOMP): Likewise. * m4/javaexec.m4 (gt_JAVAEXEC): Likewise. * m4/locale-ar.m4 (gt_LOCALE_AR): Likewise. * m4/locale-fr.m4 (gt_LOCALE_FR, gt_LOCALE_FR_UTF8): Likewise. * m4/locale-ja.m4 (gt_LOCALE_JA): Likewise. * m4/locale-tr.m4 (gt_LOCALE_TR_UTF8): Likewise. * m4/locale-zh.m4 (gt_LOCALE_ZH_CN): Likewise. * m4/malloc.m4 (gl_CHECK_MALLOC_POSIX): Likewise. * m4/nocrash.m4 (GL_NOCRASH): Likewise. * m4/pathmax.m4 (gl_PATHMAX_SNIPPET): Likewise. * m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Likewise. * m4/stdio_h.m4 (gl_STDIO_H): Likewise. * m4/tmpfile.m4 (gl_FUNC_TMPFILE): Likewise. * m4/unistd_h.m4 (gl_UNISTD_H): Likewise.

--- a/lib/clean-temp.c	Thu May 03 09:14:34 2018 -0700
+++ b/lib/clean-temp.c	Thu May 03 23:09:42 2018 +0200
@@ -30,7 +30,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#if defined _WIN32 && ! defined __CYGWIN__
 # define WIN32_LEAN_AND_MEAN  /* avoid including junk */
 # include <windows.h>
 #endif
@@ -563,7 +563,7 @@
 }
 
 
-#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#if defined _WIN32 && ! defined __CYGWIN__
 
 /* On Windows, opening a file with _O_TEMPORARY has the effect of passing
    the FILE_FLAG_DELETE_ON_CLOSE flag to CreateFile(), which has the effect
@@ -632,7 +632,7 @@
 
   block_fatal_signals ();
   /* Note: 'open' here is actually open() or open_safer().  */
-#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#if defined _WIN32 && ! defined __CYGWIN__
   /* Use _O_TEMPORARY when possible, to increase the chances that the
      temporary file is removed when the process crashes.  */
   if (supports_delete_on_close ())
@@ -658,7 +658,7 @@
 
   block_fatal_signals ();
   /* Note: 'fopen' here is actually fopen() or fopen_safer().  */
-#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#if defined _WIN32 && ! defined __CYGWIN__
   /* Use _O_TEMPORARY when possible, to increase the chances that the
      temporary file is removed when the process crashes.  */
   if (supports_delete_on_close ())