[PATCH] [clang] Use -android environment for all compiler-rt libs.

[Saleem Abdulrasool]

The original reason that I didn't sink the logic into getClangRT was specifically because the original behavior was asymmetric.  If it is supposed to be appended always, then sinking it is preferable.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D7187

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