BETA: Reworking isInsideRadius method.
	* Now we have only 2 methods, 1 accepting primitives, 1 accepting objects.
	* Removing ExtensionFunction, it isn't used anywhere.
	
	* Reviewed by: UnAfraid, Zoey76


git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6234 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad