Changes

Note: if a fellow developer cancelled their try push, they have saddled you with the cost of rebuilding the cache. (See [http://dtor.com/halfire/2014/07/02/2014_06_try_server_update.html#caching caching] details.) If you're experiencing excessive wait times (> 15min45min) pushing to try, please file a bug asking IT to reset the try repository using [https://bugzilla.mozilla.org/enter_bug.cgi?comment=please%20schedule%20a%20reset%20of%20the%20try%20repository%20ASAP%20with%20sheriffs%20%26%20releng.&component=WebOps%3A%20Source%20Control&op_sys=All&product=Infrastructure%20%26%20Operations&rep_platform=All&short_desc=Push%20to%20try%20taking%20XXX%20minutes this template] (please include specifics of your experience). They will coordinate with sheriffs and release engineering as needed.