Add missing header includes for setlocale

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/be_files.c

@@ -33,6 +33,7 @@
 #include <ctype.h>
 #include <time.h>
 #include <limits.h> /* PATH_MAX */
+#include <locale.h> /* setlocale */
 
 /* libalpm */
 #include "db.h"

lib/libalpm/package.c

@@ -33,6 +33,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
+#include <locale.h> /* setlocale */
 
 /* libarchive */
 #include <archive.h>