Bug 886741 - Fix support for expectedFailure and skip, r=jgriffin
Bug 878925 - Update double-conversion to latest git revision.  r=jwalden

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extra : rebase_source : 01275cc88cfb119f231ba83cfec0579bc11edfe1
Bug 887465 - Rewrite double-conversion's assertions in terms of the MOZ_* assertions, and keep wtf (Yarr) from redefining them.  r=jwalden

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extra : rebase_source : 3cdadf85f6bc471f065d570cb03d2441886d3738
Style fixes and proper-numeric-type usage in mfbt/tests/TestEndian.cpp.  No bug, r=trivial

--HG--
extra : rebase_source : 54a658a6baf78852a3f8839b2cbb98700a7c91e7