Use flag "2" for RU-without-radiances

Also switch to using str2num in ru_main command line interface instead of ignoring parameter

RU/cris-l1b-ru

@@ -7,7 +7,7 @@ usagexit() {
 }
 
 abspath() {
-    python -c 'import sys,os; print("\n".join([os.path.abspath(x) for x in sys.argv[1:]]))' "$@"
+	python -c 'import sys,os; print("\n".join([os.path.abspath(x) for x in sys.argv[1:]]))' "$@"
 }
 
 test -d "$RU_HOME" || echo >&2 "${Oops:?RU_HOME is not set}"
@@ -24,4 +24,4 @@ test -d "$OUTPUT_FILE" || echo >&2 "${Oops:?please specify an output directory}"
 export MATLABPATH="$RU_HOME"
 # always limit the blast radius of LD_LIBRARY_PATH to as small a space as possible
 export LD_LIBRARY_PATH="$MCRROOT/runtime/glnxa64:$MCRROOT/bin/glnxa64:$MCRROOT/sys/os/glnxa64"
-exec "$RU_HOME/run_ru_main.sh" "$MCRROOT" "$SAT" "$INPUT_FILE" "1" "$OUTPUT_FILE"
+exec "$RU_HOME/run_ru_main.sh" "$MCRROOT" "$SAT" "$INPUT_FILE" "2" "$OUTPUT_FILE"

RU/ru_main.m

@@ -2,5 +2,5 @@ function RU = ru_main(sat_name,l1b_fname,saveTotalRU_FLAG,pname_out);
 % addpath and userpath will both BREAK compiled code. so this is forbidden:
 %   userpath(getenv('RU_HOME'));
 % however, we need a way for RU instrument ref data files to load from $RU_HOME by default
-RU = cris_gran_RU_ncparam(sat_name,l1b_fname,1,pname_out);
+RU = cris_gran_RU_ncparam(sat_name,l1b_fname,str2num(saveTotalRU_FLAG),pname_out);
 return