[rql2sql] correctly handle modulo operator (closes #2192457) rql has % as a modulo operator. The string we output gets passed to a substitution function so the % needs to be escaped.

#! /bin/sh -e
 
case "$1" in
    remove)
	if [ -x "/etc/init.d/cubicweb-ctl" ]; then
	    invoke-rc.d cubicweb-ctl stop || true
	fi
    ;;
esac
 
#DEBHELPER#
 
exit 0