ported mobs_walrus to mobkit
added mobkit, mob_core, water_life, better_fauna, wildlife, zombiestdr
in mobs_creatures, disabled zombies, farm animals, and a few others because added mods replaced them.
better_fauna really is better in many respects
sheep only drop wool when sheared, not when killed
zombies just die
new walrus causes crash when hit and tries to run away
fixed walrus bug (hopefully), added tame and capture ability.