Summary:
This patch is adding support for a matcher to check string literal length.
This matcher is used in clang-tidy checkers and is part of this refactoring:
see: http://reviews.llvm.org/D19841
Reviewers: sbenza, klimek, aaron.ballman
Subscribers: alexfh, klimek, cfe-commits
Differential Revision: http://reviews.llvm.org/D19876
llvm-svn: 269274