clang-format: Support configurable list of foreach-macros.

This fixes llvm.org/PR17242.

Patch by Brian Green, thank you!

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@205307 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for dynamic ASan runtime (on Linux) to Clang driver.

Based on http://llvm-reviews.chandlerc.com/D3043 by Yuri Gribov!


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@205310 91177308-0d34-0410-b5e6-96231b3b80d8