Task #6314: Use $LOFARROOT, with fallback to /opt/lofar, for startController.sh

MAC/APL/CUDaemons/CT_StartDaemon/startController.sh

+#!/bin/bash
 # startController.sh executable taskname parenthostname parentService
 #
 # start the given executable
 #
 
 # start process
-($1 $2 $3 $4 1 2>&1 | awk '{ print strftime("%Y-%m-%d %H:%M:%S"),$0; }' >>"/opt/lofar/var/log/$2.stdout") &
+($1 $2 $3 $4 1 2>&1 | awk '{ print strftime("%Y-%m-%d %H:%M:%S"),$0; }' >>"${LOFARROOT:-/opt/lofar}/var/log/$2.stdout") &
 
 # get its pid
 # echo $!