+2013-12-17 Paul Eggert <eggert@cs.ucla.edu>
+
+ gettimeofday: port recent C++ fix to Emacs
+ Without this further patch, Emacs won't build due to
+ the portcheck failing. Also, this simplifies the patch a bit.
+ * lib/time.in.h (localtime, gmtime): Don't replace unless
+ GNULIB_GETTIMEOFDAY. Treat them more like mktime.
+ * lib/time.in.h (localtime, gmtime):
+ * m4/gettimeofday.m4 (gl_GETTIMEOFDAY_REPLACE_LOCALTIME):
+ * m4/time_h.m4 (gl_HEADER_TIME_H_DEFAULTS):
+ * modules/time (time.h):
+ Don't worry about about the possibility of localtime and gmtime
+ being absent; they're present in all C libraries we know about.
+ * m4/time_h.m4 (gl_HEADER_TIME_H_DEFAULTS):
+ Don't assume sys_time is present and has been initialized.
+ Instead, use a hack that should work even if it hasn't been.
+ Don't use a portcheck for gmtime or localtime; this supports
+ the hack.
+ * modules/time (time.h): Substitute GNULIB_GETTIMEOFDAY.
+