add non immediate membership query type

Before you could query for all members, immediate, effective, or composite. But you might want effective and composite (non immediate). Now you can do this.

You can do this in the API e.g.

public Set<Member> getNonImmediateMembers(Field f)

You can do this in the WS with: WsMemberFilter = NonImmediate

You can do this with grouper client with:

--operation=getMembersWs --groupNames=aStem:aGroup,aStem:aGroup2 --memberFilter=NonImmediate

Chris