gmod_game: Fixed dumb error in damage attribution.

Revision 600
Fixed dumb error in damage attribution.
Added some dev messages for mappers to logic entities.
Added ttt_ragdoll_pinning cvar, enables pinning corpses to walls with magneto stick for traitors. Default is off.
Some code cleanup.
Changed Files:
[ul]
[li]trunk/gamemodes/terrortown/entities/entities/ttt_damageowner/init.lua [/li][li]trunk/gamemodes/terrortown/entities/entities/ttt_logic_role/init.lua [/li][li]trunk/gamemodes/terrortown/entities/entities/ttt_map_settings/init.lua [/li][li]trunk/gamemodes/terrortown/entities/weapons/weapon_zm_carry/shared.lua [/li][li]trunk/gamemodes/terrortown/gamemode/player.lua [/li][li]trunk/gamemodes/terrortown/gamemode/util.lua[/li][/ul]

Committed By Stefan van der Meer