New option LONGSNAIL:  secondary long snail trail, holding over 12 hours
Still experimental!
Fix bug in drawing snail trail with a nettovario close to zero but not zero, appearing as a black line instead of light grey
Fix SNAILLONG for small defects
set correct snailtrail parameters for beta version
Update changes
This is beta 4.1p , and code complete
advance to next beta
Update PORtugues by J.P.Rosa
reposition thermals in simulator, and add a new one.
Fix Condor device driver no more working