Reorganized directory structure

Added support for unix socket connections
Updated installation guide to reflect directory structure changes
Fixed a typo with zdMultiLang support 

git-svn-id: https://plugins.svn.wordpress.org/postgresql-for-wordpress/trunk@190706 b8457f37-d9ea-0310-8a92-e5e31aec5664

pg4wp/db.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * @package PostgreSQL_For_Wordpress
+ * @version $Id$
+ * @author	Hawk__, www.hawkix.net
+ */
+
+// You can choose the driver to load here
+define('DB_DRIVER', 'pgsql'); // 'pgsql' or 'mysql' are supported for now
+
+// This defines the directory where PG4WP files are
+define( 'PG4WP_ROOT', dirname( __FILE__).'/plugins/pg4wp');
+
+// Set this to 'true' and check that `pg4wp` is writable if you want debug logs to be written
+define( 'PG4WP_DEBUG', false);
+// Logs are put in the pg4wp directory
+define( 'PG4WP_LOG', PG4WP_ROOT.'/logs/');
+// Check if the logs directory is needed and exists or create it if possible
+if( PG4WP_DEBUG &&
+	!file_exists( PG4WP_LOG) &&
+	is_writable(dirname( PG4WP_LOG)))
+	mkdir( PG4WP_LOG);
+
+// Load the driver defined above
+require_once( PG4WP_ROOT.'/driver_'.DB_DRIVER.'.php');
+
+// This loads up the wpdb class applying the appropriate changes to it, DON'T TOUCH !
+$replaces = array(
+	'mysql_'	=> 'wpsql_',
+	'<?php'		=> '',
+	'?>'		=> '',
+);
+eval( str_replace( array_keys($replaces), array_values($replaces), file_get_contents(ABSPATH.'/wp-includes/wp-db.php')));