Fixing Console helpers to not override the default helpers provided

tools/sandbox/cli-config.php

@@ -23,7 +23,7 @@ $connectionOptions = array(
 
 $em = \Doctrine\ORM\EntityManager::create($connectionOptions, $config);
 
-$helperSet = new \Symfony\Components\Console\Helper\HelperSet(array(
+$helpers = array(
     'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($em->getConnection()),
     'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em)
-));
\ No newline at end of file
+);
\ No newline at end of file

tools/sandbox/doctrine.php

@@ -13,7 +13,10 @@ require __DIR__ . '/cli-config.php';
 
 $cli = new \Symfony\Components\Console\Application('Doctrine Command Line Interface', Doctrine\Common\Version::VERSION);
 $cli->setCatchExceptions(true);
-$cli->setHelperSet($helperSet);
+$helperSet = $cli->getHelperSet();
+foreach ($helpers as $name => $helper) {
+    $helperSet->set($helper, $name);
+}
 $cli->addCommands(array(
     // DBAL Commands
     new \Doctrine\DBAL\Tools\Console\Command\RunSqlCommand(),