BETA: Replaced `L2SiegeSummonInstance` with `NpcRace.SIEGE_WEAPON`.

Reviewed by: !UnAfraid

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6397 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Adding missing stealth parameter to doors.
	* Reported by: Nos

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6398 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Fixed wrong soulshot boost multiplier in `EnergyAttack` effect and '''backstab''' formula.

Reported by: !FinalDestination

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6399 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad