Implement C++0x nullptr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71405 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Frontend/PCHBitCodes.h b/include/clang/Frontend/PCHBitCodes.h
index bb5c91b..29f4083 100644
--- a/include/clang/Frontend/PCHBitCodes.h
+++ b/include/clang/Frontend/PCHBitCodes.h
@@ -319,7 +319,9 @@
       /// \brief The '__uint128_t' type.
       PREDEF_TYPE_UINT128_ID    = 21,
       /// \brief The '__int128_t' type.
-      PREDEF_TYPE_INT128_ID     = 22
+      PREDEF_TYPE_INT128_ID     = 22,
+      /// \brief The type of 'nullptr'.
+      PREDEF_TYPE_NULLPTR_ID    = 23
     };
 
     /// \brief The number of predefined type IDs that are reserved for