* added dibi::date & dibi::datetime

* DibiConnection::insertId && affectedRows throws exception on failure
* added protected throwException() to drivers
* DibiPostgreDriver - can build connection string
* DibiSqliteDriver - support for parameters 'format:date' & 'format:datetime'
* fixed query errors in DibiSqliteDriver
* DibiConnection prevents serialization and multiple transactions

examples/datetime.demo.php

@@ -0,0 +1,30 @@
+<h1>DibiVariableInterface example</h1>
+<?php
+
+require_once '../dibi/dibi.php';
+
+
+// required since PHP 5.1.0
+if (function_exists('date_default_timezone_set')) {
+     date_default_timezone_set('Europe/Prague');
+}
+
+
+
+// CHANGE TO REAL PARAMETERS!
+dibi::connect(array(
+    'driver'   => 'sqlite',
+    'database' => 'sample.sdb',
+    'format:date' => "'Y-m-d'",
+    'format:datetime' => "'Y-m-d H-i-s'",
+));
+
+
+
+// generate and dump SQL
+dibi::test("
+INSERT INTO [mytable]", array(
+    'id'    => 123,
+    'date'  => dibi::date('12.3.2007'),
+    'stamp' => dibi::dateTime('23.1.2007 10:23'),
+));