Replace the representation of template template argument pack
expansions with something that is easier to use correctly: a new
template argment kind, rather than a bit on an existing kind. Update
all of the switch statements that deal with template arguments, fixing
a few latent bugs in the process. I"m happy with this representation,
now.

And, oh look! Template instantiation and deduction work for template
template argument pack expansions.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122896 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DumpXML.cpp b/lib/AST/DumpXML.cpp
index 7465ea4..65a18aa 100644
--- a/lib/AST/DumpXML.cpp
+++ b/lib/AST/DumpXML.cpp
@@ -319,6 +319,10 @@
       break;
     }
     case TemplateArgument::Template:
+    case TemplateArgument::TemplateExpansion:
+      // FIXME: Implement!
+      break;
+        
     case TemplateArgument::Declaration: {
       visitDeclRef(A.getAsDecl());
       break;