rtcds: build and install can no longer run from 'root'

NEWS

@@ -4,6 +4,7 @@ Changes for NEXT
 - Fixed bug in ADC read when IOP rate was slower than ADC rate.
 - Fixed virtualIOP parameter.  Virtual IOPs now build and run.
 - Fixed bug that leads to incorrect ordering of calculations, adding unneeded latency.
+- 'rtcds restart --all' fixed to also restart IOP model.
 ==================================================================================================
 Changes for 4.2.3
 ==================================================================================================

support/bin/rtcds.in

@@ -593,6 +593,10 @@ fi
 
 case $cmd in
     'build'|'make')
+    	if [ "$EUID" -eq 0 ] ; then
+    	    log "*** Error: building as 'root' not allowed"
+    	    exit 2
+    	fi
 	if [[ -n $ALL_FLAG ]] ; then
 	    check_env
 	    prep_buildd
@@ -607,6 +611,10 @@ case $cmd in
 	fi
 	;;
     'install')
+        if [ "$EUID" -eq 0 ] ; then
+	    log "*** Error: Installing as 'root' not allowed"
+	    exit 2
+	fi
 	if [[ -n $ALL_FLAG ]] ; then
 	    check_env
 	    prep_target