Ill-fitting voice sets used for creatures

[Svabodnik]

In the map "Upperdark: Ruins of Oghrann", the "Kanahraun Occultist" (female drow warlock) uses deep zombie-like moans/groans. They use typical Undercommon language taunts similar to other drow mobs in the area and are not secretly undead (checked with Malicious Image copy). As far as I've been able to tell, the other drow in the area sound normal, using typical PC/NPC humanoid voice sets.

In the map "The Underdark : Ophidian Tunnels", both types of "Deadly Snake" mobs (reddish black and yellow varieties) roar like bears, loudly, all the while *Growl*ing, *Snarl*ing, and *Churr*ing.

[Valefort]

Changed those to hopefully more fitting sound sets.