https://bugs.gentoo.org/338302

fix by Chris Richards for building with glibc-2.12

--- src/label_file.c
+++ src/label_file.c
@@ -19,6 +19,7 @@
 #include <regex.h>
 #include "callbacks.h"
 #include "label_internal.h"
+#include <sys/stat.h>
 
 /*
  * Internals, mostly moved over from matchpathcon.c