CppEditor: Add quickfix to convert to new style connect()

Limitations:
 * Overloads are not yet handled
 * Action is not offered if the slot can't be looked up in the
   receiver expression (e.g. when it's a base class pointer).

Change-Id: I5779ff1b74657025d058d4f3690f6723b4784497
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/cppeditor/cppquickfixes.h

@@ -488,6 +488,15 @@ public:
     void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
 };
 
+/*!
+  Converts a Qt 4 QObject::connect() to Qt 5 style.
+ */
+class ConvertQt4Connect : public CppQuickFixFactory
+{
+public:
+    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
+};
+
 /*!
  Applies function signature changes
  */