Bug 851342 - Fix punctuation of try_by_default for spidermonkey builds. r=bhearsum

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extra : rebase_source : bbda55ee88fa3a8d1be324b68d246628c32db64c
Bug 851342 - allow multiple spidermonkey projects (schedulers) per branch. r=bhearsum

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extra : rebase_source : 41d06bc90a57e0c1fdff2da9839def38d6f2cf44