[PATCH] cpp11-migrate: Add a class to support include directives modifications (Windows bot fix)

[Edwin Vane]

  I guess we won't know for sure unless you try it on Windows. I'm guessing you don't have a windows machine? If not, I guess the only option is to try it on the buildbots.

http://llvm-reviews.chandlerc.com/D1438

BRANCH
  include-directives

ARCANIST PROJECT
  clang-tools-extra