[PATCH] Allow the specification of a "mode" property on the LLDB Builder

[Zachary Turner]

I think Rick originally had a concern that we wouldn't want to use
mode=fresh by default, and that it should only be used if the build
actually breaks, and someone can kick off a new build with mode=fresh from
the web interface.

I'm actually fine just making it the default, as I don't see any real
negative consequences.  Or at least making it the default for my builder.


http://reviews.llvm.org/D8062

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