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

t/pt-variable-advisor/option_sanity.t

@@ -0,0 +1,39 @@
+#!/usr/bin/env 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 => 2;
+
+use MaatkitTest;
+shift @INC;  # These shifts are required for tools that use base and derived
+shift @INC;  # classes.  See mk-query-digest/t/101_slowlog_analyses.t
+require "$trunk/bin/pt-variable-advisor";
+
+my $cmd = "$trunk/bin/pt-variable-advisor";
+my $output;
+
+$output = `$cmd --source-of-variables=/tmp/foozy-fazzle-bad-file 2>&1`;
+like(
+   $output,
+   qr/--source-of-variables file \S+ does not exist/,
+   "--source-of-variables file doesn't exit"
+);
+
+$output = `$cmd --source-of-variables mysql 2>&1`;
+like(
+   $output,
+   qr/DSN must be specified/,
+   "--source-of-variablels=mysql requires DSN"
+);
+
+# #############################################################################
+# Done.
+# #############################################################################
+exit;