Rename move_convert to move_arg and move_res. The new names are less misleading (and shorter).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62466 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/AstGuard.h b/lib/Parse/AstGuard.h
index a65caed..d755ea7 100644
--- a/lib/Parse/AstGuard.h
+++ b/lib/Parse/AstGuard.h
@@ -61,7 +61,7 @@
   typedef ASTVector<&Action::DeleteExpr, 12> ExprVector;
 
   template <ASTDestroyer Destroyer, unsigned N> inline
-  ASTMultiPtr<Destroyer> move_convert(ASTVector<Destroyer, N> &vec) {
+  ASTMultiPtr<Destroyer> move_arg(ASTVector<Destroyer, N> &vec) {
     return ASTMultiPtr<Destroyer>(vec.getActions(), vec.take(), vec.size());
   }
 }