message: Update for upstream LLVM *.def -> *.inc rename
diff: @@ -34,7 +34,7 @@ limitations under the License.
  #include "llvm/Analysis/TargetTransformInfo.h"
  #include "llvm/Bitcode/BitcodeReader.h"
  #include "llvm/Bitcode/BitcodeWriter.h"
  -#include "llvm/CodeGen/CommandFlags.def"
  +#include "llvm/CodeGen/CommandFlags.inc"
  #include "llvm/IR/LLVMContext.h"
  #include "llvm/IR/LegacyPassManager.h"
  #include "llvm/IR/Module.h"
  