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

t/pt-archiver/samples/Plugin7.pm

@@ -0,0 +1,14 @@
+package Plugin7;
+
+sub new {
+   my ( $class, %args ) = @_;
+   return bless(\%args, $class);
+}
+
+sub statistics {
+   my ( $self, $stats, $start ) = @_;
+   $self->{src}->{dbh}->do(
+      "insert into test.stat_test(a) values($stats->{DELETE})");
+}
+
+1;