Bug 940690 - Get existing metrofx talos tests running on release/project branches, r=jmaher

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extra : amend_source : 1a0a4c19e54a72e7321040321bc584d545ea872e
Bug 931337 - Intermittent TEST-UNEXPECTED-FAIL : xperf: File 'c:\$secure' was accessed and we were not expecting it. r=jmaher
Merge remote-tracking branch 'mozilla/master'
updated metrotestharness.exe