Make tblgen more portable, allowing it to build with ICC.
Patch by Robert Zeh!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62750 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGParser.h b/utils/TableGen/TGParser.h
index a5435af..fd33aec 100644
--- a/utils/TableGen/TGParser.h
+++ b/utils/TableGen/TGParser.h
@@ -20,8 +20,8 @@
 namespace llvm {
   class Record;
   class RecordVal;
-  class RecTy;
-  class Init;
+  struct RecTy;
+  struct Init;
   struct MultiClass;
   struct SubClassReference;