[PATCH] [Compiler-rt][Sanitizer][MSan][i386] Adding support for i386

[Mohit Bhakkad]

>>! In D6433#5, @eugenis wrote:
> Are you sure you are testing i386? :)
> It would require changes to lib/msan/tests/CMakeLists.txt and something under test/msan, and this CL does not touch those files. I've tried this patch and 32-bit tests are not getting built.

Yes I am sure. But in test/msan all the tests contain hardcoded -m64. 
Currently for the sake of testing, I have replaced all these -m64 with -m32.

http://reviews.llvm.org/D6433