This old compatibility mode was only used to verify that we could match the
output of an old version of PowerAgent, and it hasn't been used in GC in a
long time. I can't see us ever using it again, either.
It offers to split at any time gap over 30 seconds and also at any interval.
If the time gap is over 5 minutes it defaults to checked, otherwise it
defaults to unchecked.
Anywhere you check, it will split the ride at that point overwriting the or
original ride with a shorter one and creating new rides after the split points
The original would get renamed with a .bak so it could be recovered.
