Fix for bug #7845 (https://gna.org/bugs/?7845).
This bug was reported by Sébastien Morin (https://gna.org/users/semor).
The fix was to increase the precision of the chi-squared value in the model-free results file.
Authored by: bugman 2006-11-25
Parent: [r2883]
Child: [r2885]
