Merge pull request #2243 from facebook/uclibc

fix uclibc's st_mtim

programs/platform.h

@@ -102,6 +102,12 @@ extern "C" {
 #      define PLATFORM_POSIX_VERSION 1
 #    endif
 
+#    ifdef __UCLIBC__
+#     ifndef __USE_MISC
+#      define __USE_MISC /* enable st_mtim on uclibc */
+#     endif
+#    endif
+
 #  else  /* non-unix target platform (like Windows) */
 #    define PLATFORM_POSIX_VERSION 0
 #  endif