Bug 945222 - Update web-platform-tests to revision 3e544e8fec95549f7ef9cfa4a6f756abd1d85e99
Change command line options a bit and move mozharness config to the tree.
Fixup servo support a bit
Bug 0 - Update web-platform-tests to revision 33981005e05f700651262c1d769db24c9195709d