Updates to goodness of fit tests.
Now reporting the goodness of fit value directly (fit), not sqrt(fit).
THis script now updates the tephra2.conf file for the forward solution if this file exists.
This script calls write_conf.pl correctly and passes the goodness of fit value. Integration steps should and can be adjusted within this script. Write_conf.pl should not be called from the main run script since the goodness of fit value is not know from this stage.
... fix to gmt wind plot.