Bug 101741 - minor fix for the wrong usage of ChangeExplicitBlockerCount in MediaRecorder. r=roc
Bug 814524 - Make WebGLContext::TexImage2D avoid readback for video elements, r=jgilbert
Bug 982560 - Fix mach fails to find tests in subdirectory. r=gps

Make the test paths relative to topsrcdir before passing them to
TestResolver. Also do not passing cwd to TestResolver since it will
filter out tests that do not live under the directory where the mach
command is executed.

Verification steps:
Execute a mach test command from any subdirectory. For example:
$ cd testing/tps/
$ ../../mach xpcshell-test ../../services/fxaccounts/tests/xpcshell/
$ ../../mach test ../../services/fxaccounts/tests/xpcshell/
Bug 1019843 - avoid a leak when init() fails. r=jorendorff
Bug 1035505 - HTMLTrackElement should fire a 'load' event not a 'loaded' event. r=rillian