CppEditor: New quick fix "Optimize For Loop"

Rewrites post increment/decrement operators (++ and --) as pre
increment/decrement operators and moves non string/numeric literals and
non id expressions from loops condition to loops initializer.

Change-Id: Id95334b6df6fcaa9af436cc1d2d0982d38bf8fe2
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/cppeditor/cppquickfixes.h

@@ -584,6 +584,16 @@ private:
     InsertVirtualMethodsDialog *m_dialog;
 };
 
+/*!
+  Optimizes a for loop to avoid permanent condition check and forces to use preincrement
+  or predecrement operators in the expression of the for loop.
+ */
+class OptimizeForLoop : public CppQuickFixFactory
+{
+public:
+    void match(const CppQuickFixInterface &interface, TextEditor::QuickFixOperations &result);
+};
+
 } // namespace Internal
 } // namespace CppEditor