Merge branch 'hv/doc-commit-reference-style' into maint
authorJunio C Hamano <gitster@pobox.com>
Fri, 9 Sep 2016 04:36:03 +0000 (21:36 -0700)
committerJunio C Hamano <gitster@pobox.com>
Fri, 9 Sep 2016 04:36:03 +0000 (21:36 -0700)
A small doc update.

* hv/doc-commit-reference-style:
SubmittingPatches: use gitk's "Copy commit summary" format
SubmittingPatches: document how to reference previous commits

Trivial merge