Incorrect duplicity version check for keepincroffulls

I seem to have been confused between backupninja 0.9 series and duplicity 0.6 series, when I implemented the check for duplicity version for support of its remove-all-inc-of-but-n-full command, to use the keepincroffulls option.

The check should be : if [ "duplicity_major" -ge 0 -a "duplicity_minor" -ge 6 -a "$duplicity_sub" -ge 10 ]; then instead of : if [ "duplicity_major" -ge 0 -a "duplicity_minor" -ge 9 -a "$duplicity_sub" -ge 10 ]; then

Sorry in advance.

(from redmine: created on 2011-09-10, closed on 2011-09-17)