- fixed potential access to deleted command list item in FilterSearchAgain() - fixed potential access deleted xotcl object by switching order in a condition - some minor cleanup
- Correct deletion of user-metaclasses: Deletion of user-metaclasses could lead to undestroyable objects, since the instances of the user-metaclasses were reclassed to ::xotcl::Object instead of ::xotcl::Class. - extend regression test for such situations