bug 927707 - vcs-sync combine mapfiles, force_push. r=hwine

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extra : rebase_source : 4b44ac2e4ffe847a5c557baff78b81fc400e7f8f
bug 929080 - bump hg incoming timeout from 2min to 5min. r=hwine

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extra : rebase_source : 55e771847a6cc13d5820d0d28deb717001d2de3e