Never mind with this one I've solve it but in a very strange way actually I've used the stable version located in the /release folder of the repository (svn://l2jfree.com/repo/l2j-free/release) and the data-pack from /trunk folder of the repo. Now one problem with the data-pack the castle.sql script does not create 2 columns ( siegeDayOfWeek and siegeHourOfDay ) and when I run the server it pops up with an error; so I've created myself those 2 columns and they look like this:

Ok... done with this, but there's another one, somewhere along the way another warning pops up:
1. WARNING in /InquisitorElvenElder.java (at line 3)
import com.l2jfree.gameserver.datatables.SkillTable;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The import com.l2jfree.gameserver.datatables.SkillTable is never used
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1 problem (1 warning)INFO Compiled Scripts Cache is disabled.
Don't know what's that...

And another little question why aren't working the builds from /trunk folder of the repository?... I've maked a mistake up in the 1'st post .... they aren't working even in windows environment.