Test that TBT uses the legacy formatter.

For #242

t/Tester/skip.t

@@ -0,0 +1,13 @@
+#!/usr/bin/env perl -w
+
+use strict;
+use warnings;
+
+use Test::Builder::Tester tests => 1;
+use Test::More;
+
+test_out("ok 1 # skip because");
+SKIP: {
+    skip "because", 1;
+}
+test_test("skip is using the legacy format");