6299231: Add support for named MBean Servers
Summary: New javax.management.namespace package.
Reviewed-by: emcmanus

Summary: Moved non-confidiential test cased from closed repo to open repo
Reviewed-by: martin

Summary: event.getComponent() is used unstead of (Component)event.getSource()
Reviewed-by: peterz

Summary: The problem code in Popup class is surrounded by AccessController.doPrivileged()
Reviewed-by: alexp

6612531: api/javax_swing/ScrollPaneLayout/index.html#xxxLayoutSize (ScrollPaneLayout2024) throws NPE
Summary: Added a check for the NPE
Reviewed-by: alexp