Backed out changesets 472a1be79a9f, 2b43b310858b, and adc20d941bd8 (bug 948554) for Win7 debug xpcshell timeouts.
Backed out changesets b03bd1170d1c, 419615a1195d, a1b699b80442, and 524c573fd8a6 (bug 937960) for Win7 debug xpcshell orange.
Land bug 951573. r=jandem