Summary: Add matcher hasAnyName as an optimization over anyOf(hasName(),...)

Reviewers: alexfh

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D17163

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@261574 91177308-0d34-0410-b5e6-96231b3b80d8