CC-1826 Restarting Pulseaudio kills liquidsoap player

Daemontools doesnt do an adequate job of killing the liquidsoap process.
Added a "killall" to make sure the process is really killed.

pypo/install/pypo-stop.py

@@ -17,6 +17,7 @@ try:
     
     print "Stopping daemontool script pypo-liquidsoap"
     os.system("svc -dx /etc/service/pypo-liquidsoap 2>/dev/null")
+    os.system("killall liquidsoap")
     
 except Exception, e:
     print "exception:" + str(e)