[rql security] fix rql bug when using yams inheritance and read permissions (closes #2410156) problems occurings when querying using is_instance_of while a subtype has some permissions not shared by the parent type

#! /bin/sh -e
 
case "$1" in
    purge)
	rm -rf /etc/cubicweb.d/
	rm -rf /var/log/cubicweb/
	rm -rf /var/lib/cubicweb/
    ;;
esac
 
#DEBHELPER#
 
exit 0