First version of installer for domain-based status networks

New installer class for domain-based status networks. (XXX: this should
probably be generalized for all multi-home systems). New script to run that
installer.

plugins/DomainStatusNetwork/scripts/installforemail.php

@@ -0,0 +1,56 @@
+#!/usr/bin/env php
+<?php
+/*
+ * StatusNet - a distributed open-source microblogging tool
+ * Copyright (C) 2011, StatusNet, Inc.
+ *
+ * Script to print out current version of the software
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+define('INSTALLDIR', realpath(dirname(__FILE__) . '/../../..'));
+
+$helptext = <<<END_OF_INSTALLFOREMAIL_HELP
+installforemail.php [options] <email address>
+
+END_OF_INSTALLFOREMAIL_HELP;
+
+require_once INSTALLDIR.'/scripts/commandline.inc';
+
+$email = $args[0];
+
+$domain = DomainStatusNetworkPlugin::toDomain($email);
+
+$sn = DomainStatusNetworkPlugin::siteForDomain($domain);
+
+if (empty($sn)) {
+    $installer = new DomainStatusNetworkInstaller($domain);
+    // Do the thing
+    $installer->main();
+    
+    $sn = $installer->getStatusNetwork();
+
+    $config = $installer->getConfig();
+
+    Status_network::$wildcard = $config['WILDCARD'];
+}
+
+StatusNet::switchSite($sn->nickname);
+
+$confirm = EmailRegistrationPlugin::registerEmail($email);
+
+$confirmUrl = common_local_url('register', array('code' => $confirm->code));
+
+print $confirmUrl."\n";