BETA: Fixed a bug in `GeoData#canSeeTarget` it was returning always true if the nearest Z was a lower Z.

Reported by: Zephyr
Reviewed by: FBIagent, St3eT, Zoey76
Patch by: FBIagent, Nos

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6479 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Improvements for `ThreadPoolManager`.
	* Removed all deprecated methods.
	* Added Javadocs.
	* Added new schedule methods with `TimeUnit` parameter to make code more readable and require less external calculations since they will be done by `TimeUnit`.
	* Renamed `ThreadPoolManager#executeTask` to `ThreadPoolManager#executeGeneral`.
	* Removed `ThreadPoolManager#executeCommunityPacket` and replaced it with `ThreadPoolManager#executePacket` since it was using same thread pool.

Reviewed by: !UnAfraid

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6480 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Fixed a minor typo in `Fort#removeDoorUpgrade`.
	* Reported by: lion

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6481 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: `Util#map` methods should constrain '''input''' value to '''inputMin''' and '''inputMax'''.
	* Added configs for level gaps in '''NPC.properties'''.
	* Removed unused '''!PreciseDropCalculation''' config.

Reviewed by: St3eT, !UnAfraid

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6482 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Attempting to decrease not necessary creation of `ArrayList`s to broadcasts stats update when there is no-one to receive it.
	* Reported by: Nos
	* Reviewed by: Nos

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6483 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
BETA: Renaming `getIsInProgress` to `isInProgress` within !Fort/Castle/Territory war sieges.
	* Also minor javadocs/spelling fixes.
	* Reviewed by: Nos, Zoey76

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6484 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad
Merge remote-tracking branch 'git-svn' of ../../L2j-svn/L2J_Server_BETA into svn