C++11: Don't fail on = default and = delete initializers.

These are converted to IdExpr(SimpleName(token)) initializers.

Change-Id: I1e85c4b261ca028dc75ffe6c00e1090630c2957c
Reviewed-by: hjk <qthjk@ovi.com>

tests/auto/cplusplus/cxx11/data/defaultdeleteInitializer.1.cpp

@@ -0,0 +1,8 @@
+class C {
+  C() = default;
+  C(const C &) = delete;
+  C &operator=(const C &) = default;
+
+  void foo() = delete;
+  template <class T> void bar(T) = delete;
+};