The Chocolate Doom icon is based on an image by Chris Metcalf
(http://www.chrismetcalf.org/) which is copyrighted to him:

    http://www.flickr.com/photos/laffy4k/448920776/

Chris has kindly agreed that the Chocolate Doom icon may be used under
the GNU GPL, so the copyright status of the icon is the same as that of
the rest of the project.

The "foo8.ico" files are 8-bit depth only, while the "foo.ico" files
contain full 32-bit versions, scaled to different sizes and with proper
alpha masks (as well as the 8-bit versions).  The 8-bit versions are
used when setting the icon within SDL, as SDL under Windows displays
full color icons in a very poor quality.  The full-color versions are
used in the resource files.