Pet Affinity Fix (maybe)

[cavedude]

Alright, we're set. KLS and I think whoever implemented Pet Affinity originally forgot to add it to that line in spells.cpp. Group spells and songs will no longer effect charmed pets, even if the caster has Pet Affinity. Of course, Bard AE songs will still hit charmed pets, as that hits all allied characters and their pets. I'll put it up on TGC tonight, and if it checks out there, I'll commit to SVN.