don't escape commas when saving named's command line

(cherry picked from commit 70dd93bf8a)

bin/named/main.c

@@ -356,7 +356,7 @@ save_command_line(int argc, char *argv[]) {
 			 * nearly always be fine.
 			 */
 			if (quoted || isalnum(*src & 0xff) ||
-			    *src == '-' || *src == '_' ||
+			    *src == ',' || *src == '-' || *src == '_' ||
 			    *src == '.' || *src == '/') {
 				*dst++ = *src++;
 				quoted = false;

bin/tests/system/resolver/tests.sh

@@ -779,5 +779,12 @@ grep "1\.2\.3\.4" dig.ns5.out.${n} > /dev/null && ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=`expr $status + $ret`
 
+n=`expr $n + 1`
+echo_i "check logged command line ($n)"
+ret=0
+grep "running as: .* -m record,size,mctx " ns1/named.run > /dev/null || ret=1
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=`expr $status + $ret`
+
 echo_i "exit status: $status"
 [ $status -eq 0 ] || exit 1