[winasan] Try to fix LNK4099 warnings seen by users
[winasan] Try to fix LNK4099 warnings seen by users

/Zi creates a separate PDB that we're supposed to pass along with our
sanitizer libraries, but the object library compilation rules aren't set
up to handle that. Rather than set that up, put the debug info in the
object files the way every other platform does it with /Z7.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@277406 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