Have merge-bot script print out local hg revision to ease merge failure diagnosis
Have merge-bot script print out local hg revision to ease merge failure diagnosis

R=jvoung
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9677006

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@8004 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client