Merge branch 'maint'

* maint:
  Further 1.5.3.5 fixes described in release notes
  Avoid invoking diff drivers during git-stash
  attr: fix segfault in gitattributes parsing code
  Define NI_MAXSERV if not defined by operating system
  Ensure we add directories in the correct order
  Avoid scary errors about tagged trees/blobs during git-fetch

attr.c

@@ -209,8 +209,11 @@ static struct match_attr *parse_attr_line(const char *line, const char *src,
 		num_attr = 0;
 		cp = name + namelen;
 		cp = cp + strspn(cp, blank);
-		while (*cp)
+		while (*cp) {
 			cp = parse_attr(src, lineno, cp, &num_attr, res);
+			if (!cp)
+				return NULL;
+		}
 		if (pass)
 			break;
 		res = xcalloc(1,