[PATCH] cpp11-migrate: Refactor for driver model of operation

[Edwin Vane]

  * The `data()` comment has already been addressed.
  * The empty line comments are for files not in this patch. They're from a rebase.
  * Finally realized what you meant by doxygen-style comments and fixed them.

http://llvm-reviews.chandlerc.com/D1545

BRANCH
  driver-model

ARCANIST PROJECT
  clang-tools-extra