[PATCH] Introduce Replacement deduplication and conflict detection function

[Manuel Klimek]

  I think generally this looks great.

  To your questions:
  1. why would you use a pair instead? it seems to me like range is strictly better here, so maybe I'm missing something
  2. I think dedup and conflict detection in one is fine - I can't imagine only wanting to do one
  3. the fixme would be fixed once the Replacements typedef is changed, and RefactoringTool is adapted - I'd strongly vote for doing that in a different patch though.

http://llvm-reviews.chandlerc.com/D1314

BRANCH
  dedup

ARCANIST PROJECT
  clang