[crossfire] gtkv2 client vs gtk client gap list.

[Anton Oussik]

My biggest obstacle (grudge?) against using gtk-v2 client is no -split
option. It is good for big/small/multiple screens, and I find playing
without quite restrictive.

Also (last I tried) it fails to compile on cygwin, but that is
probably easily fixable if I were to seriously consider using it.

I also use the GUI keybinding interface.