xdx-2.91:  Migrated to GTK3

xdx-2.5:   Function keys F1 - F8 send often used commands to the cluster.
           Close dialog when Ctl-Q is used.
           Update manual page to current conventions.

xdx-2.4.3: Fix compilation against GTK+ 2.24
           Add command line option and environment variable to specify cty.dat
           New maintainer, Nate Bargmann, N0NB

xdx-2.4.1: Fixes compilation against version 2.14 of GTK+.
