Whith some simple editing tools, this would be easy to add, as the image you desire is easily available via the internet. 'DXTBmp' to open the files, and I assume you could use 'MS Paint' to copy and merge the image (I use Photoshop), then recompile in 'DXTBmp'. I have done this on a couple of my re-paints, even though I myself cringe a bit by their inclusion....
Keep in mind that this symbol is against the law in some Countries to 'be in possession of' (in addition to simply being offensive to many), so depending on the location of the author, they cannot include them, or publicly distribute them. In the U.S., we, obviously, have no such restrictions.