- Removed pdp11_cr and pdp11_ry from the Qbus VAX simulators since these devices can't address the full Q22 address range.

- Added validation checks in auto_config to reject enabled devices which aren't Q22 capable on Q22 platforms.
- Changed pdp11_cr device to be default disabled in the PDP11 simulator
Added help strings pointing to extended device specific help for the HELP attach, set and show help