Add a new 'Pack' argument kind to TemplateArgument. This is not yet used.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73391 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateDeduction.cpp b/lib/Sema/SemaTemplateDeduction.cpp
index 84d802d..9305024 100644
--- a/lib/Sema/SemaTemplateDeduction.cpp
+++ b/lib/Sema/SemaTemplateDeduction.cpp
@@ -597,6 +597,9 @@
     // Can't deduce anything, but that's okay.
     return Sema::TDK_Success;
   }
+  case TemplateArgument::Pack:
+    assert(0 && "FIXME: Implement!");
+    break;
   }
       
   return Sema::TDK_Success;
@@ -898,6 +901,9 @@
   case TemplateArgument::Expression:
     MarkDeducedTemplateParameters(TemplateArg.getAsExpr(), Deduced);
     break;
+  case TemplateArgument::Pack:
+    assert(0 && "FIXME: Implement!");
+    break;
   }
 }