jean pellotier

Manufacturer code added to the igc file

make the aiship speed respect strictly the target speed when close enough, should improve drifting carrier on mp

added the velocity for the ufo, used in lag compensation

introduction of a zero lag mode when pilots are synched in time, eg using ntp.

preparation for the lag correction based on time sync, instead of fixed

a new clock following real time pace, for mp protocol

warning removal, forgot to remove ival when addressing bug 1885

stop sending velocity and acceleration in the motion information when crashed