[RP] [Patch] digraph support (now on the Wiki)

[Nikolai Weibull]

This patch adds digraph support, which lets you insert hard-to-type
characters easily.

Please see

http://ratpoison.antidesktop.net/cgi-bin/wiki/digraphs.patch

There are a couple of issues that need fixing for it to work well.  If
anyone with more X11 skills than I do (which is probably most
programmers out there) has some time to spare, please take a look and
come with suggestions or patches to the patch :-).

Thanks!

 nikolai