openejb m2 groupId

[David Jencks]

The contents of the m1 and m2 build openejb jars are necessarily  
somewhat different, so it's desirable that they have different names:  
otherwise the geronimo m2 configs build tends to pick up m1 openejb  
jars.  I think the easiest way to do this is to give the m2 jars m2  
style groupIds.  To get this started I changed the m2 openejb build  
to use org.openejb.  If this is the wrong groupId let me know what is  
more correct and I will change it.

 thanks
david jencks