f26c41e8dd
We add a new clang library called `clangSupport` for putting those utils which can be used in clang table-gen and other clang component. We tried to put that into `llvm/Support`, but actually those stuffs only used in clang* and clang-tblgen, so I think that might be better to create `clang/Support` * clang will used that in https://reviews.llvm.org/D111617. Reviewed By: khchen, MaskRay, aaron.ballman Differential Revision: https://reviews.llvm.org/D121984