tree_entry_interesting(): support wildcard matching

never_interesting optimization is disabled if there is any wildcard
pathspec, even if it only matches exactly on trees.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

dir.c

@@ -1197,6 +1197,9 @@ int init_pathspec(struct pathspec *pathspec, const char **paths)
 
 		item->match = path;
 		item->len = strlen(path);
+		item->has_wildcard = !no_wildcard(path);
+		if (item->has_wildcard)
+			pathspec->has_wildcard = 1;
 	}
 
 	qsort(pathspec->items, pathspec->nr,