Unit Tests

- Eliminated obsolete benchmark.t.
- Removed the 'quick' mode logic to skip benchmarks in run_all.
- Restored bug.480.t tests that hung earlier.

test/sorting.t

@@ -44,8 +44,8 @@ qx{../src/task rc:sorting.rc add priority:H project:A due:yesterday one};
 qx{../src/task rc:sorting.rc add priority:M project:B due:today     two};
 qx{../src/task rc:sorting.rc add priority:L project:C due:tomorrow  three};
 qx{../src/task rc:sorting.rc add priority:H project:C due:today     four};
-
 qx{../src/task rc:sorting.rc 2 start};
+#diag (qx{../src/task rc:sorting.rc list});
 
 my %tests =
 (
@@ -170,8 +170,6 @@ my %tests =
 for my $sort (sort keys %tests)
 {
   my $output = qx{../src/task rc:sorting.rc rc.report.list.sort:${sort} list};
-#  like ($output, qr/$tests{$sort}/ms, "sort:${sort}");
-
   for my $expectation (@{$tests{$sort}})
   {
     like ($output, qr/$expectation/ms, "sort:${sort}");