[PATCH] Remove nasty environment variables in MachineVerifier in favor of a build option

[Mehdi AMINI]

This is something I'd like!
Actually I was thinking that lit could replace "llc" with "llc --verify-machineinstrs" on the RUN line. Do you prefer to keep an environment variable inside LLVM?


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D7365

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