update the scanscan --help close[t:2258]

git-svn-id: file:///svn/toku/tokudb@16499 c7de825b-a66e-492c-adef-691d508d4ae1

db-benchmark-test/scanscan.c

@@ -44,6 +44,9 @@ static int print_usage (const char *argv0) {
     fprintf(stderr, "  --mysql             compare keys that are mysql big int not null types\n");
     fprintf(stderr, "  --env DIR           put db files in DIR instead of default\n");
     fprintf(stderr, "  --log_dir LOGDIR    put the logs in LOGDIR\n");
+    fprintf(stderr, "  --range <low> <high> set the low and high key boundaries in which random range queries are made\n");
+    fprintf(stderr, "  --experiments <n>   run n experiments (default:%d)\n", n_experiments);
+    fprintf(stderr, "  --recover           run recovery\n");
     fprintf(stderr, "  --verbose           print verbose information\n");
     return 1;
 }