Merge branch 'kn/for-each-ref-skip' into next

"git for-each-ref" learns "--skip-until" option to help
applications that want to page its output.

* kn/for-each-ref-skip:
  ref-cache: set prefix_state when seeking

Author: gitster

refs/ref-cache.c

@@ -527,6 +527,7 @@ static int cache_ref_iterator_seek(struct ref_iterator *ref_iterator,
 				level = &iter->levels[iter->levels_nr++];
 				level->dir = dir;
 				level->index = -1;
+				level->prefix_state = PREFIX_CONTAINS_DIR;
 			} else {
 				/* reduce the index so the leaf node is iterated over */
 				if (cmp <= 0 && !slash)