v2.9.2: Fixed regression with proper motion output units.

Field (de-)rotation during translation now takes partially into account PV distortions.
Increased 2nd peak minimum distance from 1st peak in MATCHing peak finder to accommodate "dirty" correlation peaks.
Added gentle regularization of astrometric solutions.
Fixed crashes happening with some malformed command lines.
Fixed number agreement in information display.
Turned off auto-vectorization of the weighting loop in update_samples() to bypass an INTEL bug.