Bug 779754. Fix intermittent test_destinationURI_annotation.xul by cleaning up possible leftover files before starting the test. r=mconley
Bug 823109. Only extract d3d dlls when necessary. r=ted

This adds proper dependencies so that make can do better.

--HG--
extra : rebase_source : 4878bf741f29d738603f090e914a1adf2e31732b