Bug 1078265 - Add support for split Android APK jobs

Treeherder equivalent of:
https://hg.mozilla.org/webtools/tbpl/rev/c60baf450cde
Bug 1080250 - Add support for Windows 8 x64

Treeherder equivalent of:
https://hg.mozilla.org/webtools/tbpl/rev/547a7de112ac
plus the followup bug 1085549.