[schema2sql] More docstrings and minor API improvements
Along the way, renamed local `column` variable to `attr` where we're NOT manipulating a DB
column name but a schema attribute.
Related to #14050899
#! /bin/sh -e
case "$1" in
configure|abort-upgrade|abort-remove|abort-deconfigure)
update-rc.d cubicweb defaults 99 >/dev/null
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
#DEBHELPER#
exit 0