New spell, Ice Nova and related radius projectile code.

CC/debuff/general 1.0.1.4 spell changes forum thread: http://openmeridian.org/forums/index.php/topic,103.0.html

This introduces a new Faren level 5 spell, Ice Nova, which does area cold damage to a small radius (currently set to 6). Currently costs 15 mana and is instant-cast, requiring 1 red and 2 blue mushrooms (this will prob change).

More importantly, this pull request includes the infrastructure for a new type of animation: the radius projectile. Given a caster, range, speed and angle of projectile from the function SomethingShotRadius() in user.kod, the client will now shoot projectiles from the caster in a circle at the given angles, to the given range.

I've included preliminary projectile graphics for Ice Nova in this pull, but I'm still working on them and if any artists would like to lend a hand, I could use the help :)