[mt670] Some additions to comments and definitions.
[mt671] Fix autorepeat spell cancel
[mt672] Some cleanup
[mt673] Correct UpdateUInt32Value to prevent power opcode spam
[mt674] Correct focus regeneration
[mt675] Bullheaded spell
[mt676] Silence can now be removed by PvP trinkets
[mt677] More safety with auraflags
[mt678] Fix possible client crashes.