API IsRaidLeader

==Removed== 
use UnitIsGroupLeader instead.
 isLeader = IsRaidLeader() 
Determines if the player is a raid leader himself.
==Returns==
:;isLeader:1 if the player is the raid leader, otherwise nil
==Example==
 if (IsRaidLeader())
 DEFAULT_CHAT_FRAME:AddMessage ("I am the Raid Leader.");
 elseif not (IsRaidLeader())
 DEFAULT_CHAT_FRAME:AddMessage ("I am not the Raid Leader.");
 end
==Notes==
Chances are you came to this function looking for a rank check system for your raid, this function will probably not cut it however GetRaidRosterInfo() can handle this
==Patch changes==
*