Fix the MS-Windows build broken by 2011-01-17T19:01:01Z!eggert@cs.ucla.edu and emacs-23/2010-05-21T19:51:48Z!acm@muc.de.

lib/makefile.w32-in:
 lib/getopt_.h: New files.
 src/s/ms-w32.h (HAVE_MKTIME): Remove.
 src/makefile.w32-in (LOCAL_FLAGS): Add -I../lib.
 (GNULIB): New variable.
 (LIBS): Add $(GNULIB).
 $(TEMACS): Depend on $(GNULIB).
 <top-level>: Fix font-lock disrupted by a lone `"'.
 src/makefile.w32-in (LOCAL_FLAGS): Add -I../lib.
 (GETOPTOBJS, GETOPTDEPS): Remove targets.
 (MOVEMAILOBJS): Replace $(GETOPTOBJS) with ../lib/$(BLD)/libgnu.$(A).
 ($(BLD)/movemail.exe): Depend on ../lib/getopt.h.
 (ECLIENTOBJS, ETAGSOBJ, CTAGSOBJ, EBROWSEOBJ): Replace getopt.o
 and getopt1.o with ../lib/$(BLD)/libgnu.$(A).
 (clean): Don't remove getopt.h.
 (getopt.h, $(BLD)/getopt.$(O), $(BLD)/getopt1.$(O)): Remove targets.
 ($(BLD)/ctags.$(O), $(BLD)/etags.$(O)): Replace getopt.h with
 $(EMACS_ROOT)/lib/getopt.h.
 nt/makefile.w32-in (all-other-dirs-nmake, all-other-dirs-gmake)
 (bootstrap-nmake, bootstrap-gmake, bootstrap-clean-nmake)
 (bootstrap-clean-gmake, clean-other-dirs-nmake)
 (clean-other-dirs-gmake, cleanall-other-dirs-nmake)
 (cleanall-other-dirs-gmake, distclean-other-dirs-nmake)
 (distclean-other-dirs-gmake, maintainer-clean-other-dirs-nmake)
 (maintainer-clean-other-dirs-gmake): Recurse into ../lib as well.
 nt/configure.bat: Create lib/makefile.
 nt/config.nt (HAVE_MKTIME, BROKEN_MKTIME): Remove.
 (HAVE_ATTRIBUTE_ALIGNED, HAVE_C99_STRTOLD, HAVE_DECL_GETENV)
 (HAVE_DECL_LOCALTIME_R, HAVE_WCHAR_T, PACKAGE, VERSION, inline)
 (_GL_UNUSED, _UNUSED_PARAMETER_): Add definitions, for gnulib.

lib-src/ntlib.c

@@ -143,7 +143,7 @@ setuid (unsigned uid)
 }
 
 int
-setegid (unsigned gid)
+setregid (unsigned rgid, unsigned gid)
 {
   return 0;
 }