Сборка сервера Interlude от команды L2jFrozen 946

[CORE] Fixing warnings from new settings:
Avoiding sythetic access.
Avoiding possible null pointer access.
[CORE] Cleanup and improvements:
Implementing getActingPlayer() for more classes than just L2PlayableInstance.
Avoiding faulty code that may lead to NPE.
Cleanup from useless variable sets to null.
Cleanup of invalid comments.
Added SVN:ignore for build folder.
Removed some invalid "synthetic-access" suppress warnings.
Reworked FairyTrees AI.
Removed JUnit 3 from class path, if anyone is going to use it, set the latest version.
Removed empty folder.
[CORE] Reworking Admin Cursed Weapon.