Define XOP mime type for XBoard Supply a white-knight icon for this mime type, called application/x-xboard-opt, and a sesktop file to associate it with running XBoard with this settings file.
Install icons directly Rather than letting make-install copy the pixmaps to the XBoard data directory they are installed directly from the source files. The name of the TRN icon was also corrected and changed.
Add xml file for defining mime types The file xboard.xml defines application/x-chess-pgn, aplication/x-chess-fen and application/x-xboard-trn as mime types for *.pgn, *.fen and *.trn files, so these files can be associated with XBoard in various modes.