Patch from Dave Love <d.love@liverpool.ac.uk> to fix SGE load sensor

mode so that each run through the loop does a fresh check of system
health.  Otherwise, things like process information, filesystem
status, etc. won't be refreshed, and the cached (i.e., stale) data
from the first time through the loop will be used indefinitely!  This
also allows updating/modifying the NHC check modules in /etc/nhc/*.nhc
without having to restart the load sensor.

Author: Michael Jennings

Diff for: nhc

@@ -593,18 +593,23 @@ nhcmain_load_sysconfig
 nhcmain_finalize_env
 nhcmain_redirect_output
 nhcmain_check_conffile || exit 0
-nhcmain_load_scripts
 if [[ "$NHC_RM" == "sge" ]]; then
     while : ; do
         read INPUT
         if [[ $? != 0 || "$INPUT" == "quit" ]]; then
             exit 0
         fi
+	# We need to do this each time to flush the caches which the
+	# scripts mostly keep (filesystems, process trees, etc.).
+	# Also the scripts can be changed without having to kill the
+	# sensor on all the hosts to pick that up.
+	nhcmain_load_scripts
         if nhcmain_run_checks ; then
             nhcmain_finish
         fi
     done
 else
+    nhcmain_load_scripts
     nhcmain_set_watchdog
     nhcmain_run_checks
     nhcmain_mark_online