#1 Add 'release' method to DAOActions

[Julio Lorenzo]

DAOAction can be a 'release' method, which free all
resources used by them ... If I set like
setCacheable(true), I must know all resources cached by
this action :(
If DAOAction have this method, then PooledActionFactory
can be created.

PD: when action.getCacheable()==false, then processor
automatic call release, or relese by your own.