fixes include in wxPreferences when the Dialog is not installed
always include sstream, OSX does need it too
added includes to InfoBarGeneric and CalendarCtrlGeneric so they work if no native is used
fixes wxIcon to Ruby convertion through wxBitmap
make properly TaskBar#SetIcon so it does not shadow the other method
added some Carbon old tricks to App so it does react like an real application
added bundle and DS_Store to the ignored files