Switch fpsActor from MPS to cobraCharmer; old DB to opDb, add new CoordTrans, etc.

There is just enough stuff in the fpsActor to keep it, but all the MPS, etc. stuff needs to be stripped out and a trivial amount of cobraCharmer stuff put in. And the MCS camera control control needs to be slightly tweaked. And the current coordinate transforms must be replaced by the pfs_utils routines.