[OE-core] [Patch 0/1] perf: Disable warnings as errors for kernels 3.1+

[Konrad Scherer]

The original method to remove -Werror using sed does not work on 
kernels after 3.1 due to trailing space. To avoid build failures due to
warnings as errors add the WERROR env variable.

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Konrad Scherer, MTS, Linux Products Group, Wind River