Another windows build fix attempt.

Inspired by http://public.kitware.com/pipermail/cmake-developers/2012-March/003768.html


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198153 91177308-0d34-0410-b5e6-96231b3b80d8
Fix parens fail in r198142

Probable cause of the lld build failure on VS 2012.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198154 91177308-0d34-0410-b5e6-96231b3b80d8
Python compatibility fix for r198150

Remove the stat call error reporting for now.

It wasn't essential so silent fallback should be fine here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198155 91177308-0d34-0410-b5e6-96231b3b80d8