The svn server fails often, causing codereview.settings not being fetched. When no valid cached credential is found, codereview.settings wouldn't be fetched either.

Enforce LANGUAGE=en for odd systems like mine.

TEST=gcl should act better with unstable svn server or invalid cached credentials
BUG=none

Review URL: http://codereview.chromium.org/3111016

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@56700 0039d316-1c4b-4281-b951-d872f2087c98