codereview: make --ignore_hgpatch_failure work again
codereview: make --ignore_hgpatch_failure work again

R=golang-dev, bradfitz
CC=golang-dev
http://codereview.appspot.com/4627067

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang