Sync with 1.8.5.1
authorJunio C Hamano <gitster@pobox.com>
Tue, 3 Dec 2013 19:42:03 +0000 (11:42 -0800)
committerJunio C Hamano <gitster@pobox.com>
Tue, 3 Dec 2013 19:44:12 +0000 (11:44 -0800)
* maint:
Git 1.8.5.1
ref-iteration doc: add_submodule_odb() returns 0 for success

Trivial merge