remove (or hide behind a 'verbose' flag) extra output from system tests

lib/isc/tests/random_test.c

@@ -63,6 +63,7 @@ static double biginv =	2.22044604925031308085e-16;
 static double igamc(double a, double x);
 static double igam(double a, double x);
 
+/* Set to true (or use -v option) for verbose output */
 static bool verbose = false;
 
 typedef enum {

lib/isc/tests/regex_test.c

@@ -34,7 +34,7 @@
 #include <isc/print.h>
 #include <isc/util.h>
 
-/* Set to true for verbose output */
+/* Set to true (or use -v option) for verbose output */
 static bool verbose = false;
 
 /* test isc_regex_validate() */

lib/isc/tests/task_test.c

@@ -40,6 +40,7 @@
 
 #include "../task_p.h"
 
+/* Set to true (or use -v option) for verbose output */
 static bool verbose = false;
 
 static isc_mutex_t lock;

lib/isc/tests/timer_test.c

@@ -36,7 +36,7 @@
 
 #include "isctest.h"
 
-/* Set to true for verbose output */
+/* Set to true (or use -v option) for verbose output */
 static bool verbose = false;
 
 #define	FUDGE_SECONDS	0	     /* in absence of clock_getres() */