Sync with changes from r300825 in clang.

Generate the better include paths. Instead of #include <llvm_header.h> doxygen
produces #include "llvm/Folder/llvm_header.h"

Patch by Yuka Takahashi (D32342)!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301569 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed