fixes issue 925 + support msbuild by removing warnings from /GZ and /GX options
fixes issue 925
+ support msbuild by removing warnings from /GZ and /GX options

git-svn-id: fe3cd4388a6e5a968b09397a3d721fe124e8117a@897 5b54908e-ead4-fc18-b48a-0285e6dbc711

rnk/drmemory,rnk/drmemory,rnk/drmemory,rnk/drmemory