Pin current pip version. r=dustin
for Bug 1003729 - Update version of pip installed on automation machines from 0.8.2 to 1.5.4+
Merge default->production

$ hg merge -P -r default
changeset:   1851:9a0ece91bbea
tag:         tip
parent:      1849:9f5112279738
user:        Justin Wood <Callek@gmail.com>
date:        Wed Jun 18 12:58:31 2014 -0400
summary:     Pin current pip version. r=dustin

--HG--
branch : production