jpa changes might have broken stuff-- please report problems

[David Jencks]

I just committed a bunch of changes I've been working on for a  
while.  Its possible that some might affect other areas, in  
particular GEROIMO-3134 which changes how our jndi references find  
the configuration to search for the target gbean.

One good effect is that I think persistence units directly in wars  
are now working properly.

If there are problems please speak up.

thanks
david jencks