Add lib/, t/lib/, and sandbox/. All modules are updated and passing on MySQL 5.1.

t/lib/ProtocolParser.t

@@ -0,0 +1,23 @@
+#!/usr/bin/perl
+
+BEGIN {
+   die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
+      unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
+   unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
+};
+
+use strict;
+use warnings FATAL => 'all';
+use English qw(-no_match_vars);
+use Test::More tests => 1;
+
+use ProtocolParser;
+use MaatkitTest;
+
+my $protocol = new ProtocolParser();
+isa_ok($protocol, 'ProtocolParser');
+
+# #############################################################################
+# Done.
+# #############################################################################
+exit;