Small Fixes to Small Update

-Adds a missing bit to the CanalSat protocol, used by the new
Motorola keyset.
-A quick fix to a bug in one of the new Wharfedale keysets.
-First pass at keyset for Astro B.yond set-top box.
Minor Update

- Modifies the final check bit for the CanalSat protocol.
- Adds an additional Astro keyset.