Add forked Maatkit tools in bin/ and their tests in t/.

t/pt-query-digest/samples/write-to-fifo.pl

@@ -0,0 +1,13 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings FATAL => 'all';
+use English qw(-no_match_vars);
+
+my ($fifo, $t) = @ARGV;
+
+open my $fh, '>', $fifo or die $OS_ERROR;
+print $fh "I'm a little teapot short and stout...\n";
+sleep $t;
+
+exit;