Fix an assertion when handling a custom case of virtual inheritance; also reduce code duplication

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193610 91177308-0d34-0410-b5e6-96231b3b80d8
Resubmit "Refactor DynTypedMatcher into a value type class, just like Matcher<T>."

Summary: This resubmits r193100, plus a fix for a breakage with MSVC.

Reviewers: klimek, rnk

CC: cfe-commits, revane

Differential Revision: http://llvm-reviews.chandlerc.com/D2005

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193613 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Option to control spacing in template argument lists.

Same as SpacesInParentheses, this option allows adding a space inside
the '<' and '>' of a template parameter list.

Patch by Christopher Olsen.

This fixes llvm.org/PR17301.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193614 91177308-0d34-0410-b5e6-96231b3b80d8