LP878284: stop_osrf action should stop, not start, Perl

LP878284: stop_osrf action should stop, not start, Perl

As reported by Vicent Mas <uvemas@gmail.com> to the Evergreen
developer's mailing list:

"""
It seems I've found a small bug in the
/openils/bin/osrf_ctl.sh script. The line for the osrf_stop action is:

"stop_osrf") stop_python; stop_c; start_perl;;

but should be:

"stop_osrf") stop_python; stop_c; stop_perl;;
"""

Signed-off-by: Dan Scott <dscott@laurentian.ca>