clang-format: Don't butcher __asm blocks.

Instead completely cop out of formatting them for now.

This fixes llvm.org/PR20618.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216501 91177308-0d34-0410-b5e6-96231b3b80d8
[modules] Don't assert when merging virtual functions that override other
functions. Also don't needlessly pull in non-canonical declarations of the
overridden virtual functions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216503 91177308-0d34-0410-b5e6-96231b3b80d8