clang-cl: add more options

This adds a bunch of options to clang-cl. Notably, this includes
all the options that get passed when doing a default build of a
command-line project with msbuild.exe in Debug and Release modes,
and I believe all flags from Reid's original patch.

Differential Revision: http://llvm-reviews.chandlerc.com/D1264

llvm-svn: 187637