Properties:

Properties:

- /engines/engine0/rpm changed to read-only
- /engines/engine0/egt added (read-only)
- /controls/mixture added
- /controls/propellor-pitch added (not used for C172)

BFI:

- getEGT() added
- getMixture() and setMixture() added
- getPropAdvance() and setPropAdvance() added (= pitch)
- cleaned up reinit function a bit
- force reinit only when values are actually changed; for example,
  setting the flight model to the current flight model will not cause
  a reinit

LaRCSim:

- hook up mixture and pitch to FGControls (they were hard-coded
  before)