[Therion] xtherion crashes with tcl8.4

[Wookey]

I've just discovered that xtherion only actually works with tk8.5,
not tk8.4. Is that expected? If you only have tk8.4 installed it dies
with a segfault whilst loading fonts during startup.

If the authors don't expect it to work with tk8.4 then that's fair
enough but I need to change the dependencies so people don't end up
trying to use it. Alternatively I can provide details of the crash so
we can make sure it _does_ work with 8.4.



Wookey
-- 
Principal hats:  Linaro, Emdebian, Wookware, Balloonboard, ARM
http://wookware.org/