Rename cache_match_stat() to ce_match_stat()

Signed-off-by: Brad Roberts <braddr@puremagic.com>
Signed-off-by: Petr Baudis <pasky@ucw.cz>
diff --git a/update-cache.c b/update-cache.c
index 19d8f82..a6f9d6c 100644
--- a/update-cache.c
+++ b/update-cache.c
@@ -191,7 +191,7 @@
 	if (lstat(ce->name, &st) < 0)
 		return ERR_PTR(-errno);
 
-	changed = cache_match_stat(ce, &st);
+	changed = ce_match_stat(ce, &st);
 	if (!changed)
 		return ce;