Log Message:
Update to 2.5.  Upstream Changelog is:

  2.3   1) Added the ability to do a partial search on callsign.  This allows
	   you to search for a prefix<area> or on a full callsign as in
	   prefix<area><suffix>

pkgsrc changes:

  Set LICENSE.
  Adapt to more modern upstream.
  Change to fltk13.
  Rototill upstream's makefile to use CXX to compile C++.