Exclude MSVC to try to unbreak their builds. We have a bad skew between how CMake drives a windows link and how our custom command does.
Exclude MSVC to try to unbreak their builds. We have a bad skew between
how CMake drives a windows link and how our custom command does.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@208903 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt