Patch from Dave Yeo to remove more CPP hackery.

Dave's comments:
This commit will break OS/2's EMX 0.9d library (GCC 2.8.1) which has been
been replaced by klibc. Considering the age of EMX and lack of testing
and that klibc contains so many improvements I think this is exceptable.
diff --git a/src/libFLAC/metadata_iterators.c b/src/libFLAC/metadata_iterators.c
index e9d5275..32e8ed3 100644
--- a/src/libFLAC/metadata_iterators.c
+++ b/src/libFLAC/metadata_iterators.c
@@ -3312,7 +3312,7 @@
 	srctime.modtime = stats->st_mtime;
 	(void)chmod(filename, stats->st_mode);
 	(void)utime(filename, &srctime);
-#if !defined _MSC_VER && !defined __BORLANDC__ && !defined __MINGW32__ && !defined __EMX__
+#if !defined _MSC_VER && !defined __BORLANDC__ && !defined __MINGW32__
 	(void)chown(filename, stats->st_uid, -1);
 	(void)chown(filename, -1, stats->st_gid);
 #endif