BETA: Reworking clan privilege bit masks.
	* Added `EnumIntBitMask<T>` template which handles all bitwise operations.
	* Removed clan privilege bit masks from `L2Clan`.
	* Added `ClanPrivilege` enum which now hosts all clan privileges bit masks.
	* Patch by: FBIagent
	* Reviewed by: Zoey76, xban1x, UnAfraid, Nos, St3et, Adry_85
	* Tested by: xban1x

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6384 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Mistake from [6384].

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6385 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad