Engine support for building Icons

[reelstuff]

I noticed that when building a standalone on MAC OSX in the
standalone application settings you can choose ask answer dialog icons for MAC OSX, which works brilliantly,

However this option is not offered for other operating systems,

There may be a way to do this I expect, there is, however it would be nice to be able to specify an ICON which could be rendered the same cross platforms.

This is easier said than done of course but just thought I would mention it.

I cant seem to get the same appearance across platforms on most graphic issues, and I expect that this is possible or at the very least probable.