MenuItemToggle is fixed

Supports callbacks now.
Updated MenuTest to supports the new API.
Updated CHANGELOG and version
Updatged Xcode project for Mac
Update the flurry SDK version.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
Merge pull request #2785 from dumganhar/develop

Sync some fixes from master branch
Merge pull request #2782 from natural-law/develop

Update the flurry SDK version.
Merge branch 'menuitem_toggle_fixes' of https://github.com/ricardoquesada/cocos2d-x into ricardoquesada-menuitem_toggle_fixes
Reverting target to android-8.
Don't generate js binding glue code for CCMenuItem.*::initWithCallback.
Merge pull request #2787 from dumganhar/ricardoquesada-menuitem_toggle_fixes

Merge PR https://github.com/cocos2d/cocos2d-x/pull/2777
[AUTO] : updating submodule reference to latest autogenerated bindings
Merge pull request #2789 from CocosRobot/updategeneratedsubmodule_1370507591

[AUTO] : updating submodule reference to latest autogenerated bindings
[iOS] Enabling multiple touch event for TestJavascript, multi-platform-js, multiplatform-lua.Disabling multiple touch event for multi-platform-cpp.