Now that llvm::support::endianness has been renamed to llvm::endianness, we can use the shorter form. This patch replaces llvm::support::endianness with llvm::endianness.
FileEntryRef
FileID
SourceManager::getMemoryBufferForFileOr{None,Fake}()
SourceManager::getFileEntryRefForID()
CLANG_RESOURCE_DIR