ExceptionConfigWindow -> BreakConditionConfigWindow.

Stop on image load removed from BreakpointsView, pending adding it to
BreakConditionConfigWindow with some additional options.
Rework layout of BreakConditionConfigWindow.

- Place exception-related settings into their own BBox.
- Add another box for image load-related settings. This will eventually
  allow one to constrain the stop on image load option to limit itself
  to specific image names. Not yet functional.
Implement debugger infrastructure for stop on...

...image load with name matching.

- Move the stop on image load setting to Team, along with a new setting
governing the use of the (also newly added) name list.

- Add accessors for maintaining the name list, and events/notifications
for listeners with regards to changes to all stop on image load
settings.

- Adjust user interface listener hooks for additional functionality.
Implement configuration for stop on image load with names.

- BreakConditionConfigWindow is now a team listener so it can watch for
the appropriate events.
- Implement reading/maintaining state in response to the various
notifications.
- Implement adding/removing names and enabling/disabling the use of the
name list.