Add -v option parsing to regress tests, currently a no-op.

This will be used by a "check-verbose" target in the future.

lib/util/regress/strtofoo/strtobool_test.c

@@ -61,12 +61,24 @@ int
 main(int argc, char *argv[])
 {
     struct strtobool_data *d;
-    int errors = 0;
-    int ntests = 0;
-    int value;
+    int errors = 0, ntests = 0;
+    int ch, value;
 
     initprogname(argc > 0 ? argv[0] : "strtobool_test");
 
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
     for (d = strtobool_data; d->bool_str != NULL; d++) {
 	ntests++;
 	value = sudo_strtobool(d->bool_str);