clang 8.0.0

### Tooling → AST Relation

File in include/clang/Tooling | Includes file in include/clang/AST
--- | ---
ASTDiff / ASTDiffInternal.h | ASTTypeTraits.h
Refactoring / ASTSelection.h | ASTTypeTraits.h
FixIt.h | ASTContext.h
Refactoring / RecursiveSymbolVisitor.h | AST.h
Refactoring / RecursiveSymbolVisitor.h | RecursiveASTVisitor.h
Tooling.h | ASTConsumer.h
Refactoring / Rename / USRFinder.h | AST.h
Refactoring / Rename / USRFinder.h | ASTContext.h
Refactoring / Rename / USRLocFinder.h | AST.h