AST reader support for having specializations of templates from earlier in the chain.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111985 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Serialization/ASTBitCodes.h b/include/clang/Serialization/ASTBitCodes.h
index 3341679..d879fdf 100644
--- a/include/clang/Serialization/ASTBitCodes.h
+++ b/include/clang/Serialization/ASTBitCodes.h
@@ -316,7 +316,11 @@
       /// \brief Record code for an update to a decl context's lookup table.
       ///
       /// In practice, this should only be used for the TU and namespaces.
-      UPDATE_VISIBLE = 34
+      UPDATE_VISIBLE = 34,
+
+      /// \brief Record code for template specializations introduced after
+      /// serializations of the original template decl.
+      ADDITIONAL_TEMPLATE_SPECIALIZATIONS = 35
     };
 
     /// \brief Record types used within a source manager block.