Implement has(), hasDescendant(), forEach() and forEachDescendant() for
Types, QualTypes and TypeLocs.

Review: http://llvm-reviews.chandlerc.com/D83

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166917 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed