Add missing scripts for Thorim trash mobs

Entries: 32873, 33725, 33054, 33125, 34146, 34150, 34151
Merge branch 'wotlk' of git://github.com/scriptdev2/acid into wotlk
Add Thorim arena crowd

Entries 32922, 32923, 32924 and 32925
Allow the snow mounds to despawn

This will ammend the previous commit
Add combat movement for Captured Mercenary Soldiers
Fix combat movement for Hodir helpers
Fix outdated part of creature 28768

Thanks @Rog360 for providing the feedback
Merge pull request #56 from xfurry/wotlk

Ulduar updates