Denasalizing the Hansajet's autopilot

Denasalizing the Hansajet's autopilot

A complex, Nasal-free autopilot built on property-rules, modeled after
the original Sperry SP40 AP as described in the Hansajet Operations
Manual Section 9.0ff.

Complete:
- Autopilot Controller, Sperry 1781216-50
- pitch and altitude hold
- pitch change due to pitch switch
- heading select and heading hold

Still under construction:
- radio station interception (VOR+LOC)
- rudder, aileron and elevator trim indicators
- autotrim