[PATCH] Mostly standardize on "MumbleToolChain" as the ToolChain subclass name. NFC

[Chandler Carruth]

The content here seems fine, but clang-format has changed a lot of unrelated lines of code.

How about sending me just a fresh clang-format of lib/Driver? You'll want to look at the result and revert some hunks that don't make sense I suspect, but that would give you a much more consistent and clean baseline.


http://reviews.llvm.org/D10609

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