merged branch myurasov/patch-1 (PR #5261)

Commits
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ac0fb48 0x02 -> \MongoBinData::BYTE_ARRAY
70a64bd MongoBinData constructor now require "type" parameter

Discussion
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MongoBinData constructor now requires "type" parameter

From mongo driver version 1.2.11 E_DEPRECATED is emitted when the 2nd argument (type) is not used for MongoBinData constructor. At the moment the default value is 0x02 ("byte array").

See: http://php.net/manual/en/mongobindata.construct.php

src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php

@@ -104,7 +104,7 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
     {
         $data = array(
             $this->options['id_field']   => $sessionId,
-            $this->options['data_field'] => new \MongoBinData($data),
+            $this->options['data_field'] => new \MongoBinData($data, \MongoBinData::BYTE_ARRAY),
             $this->options['time_field'] => new \MongoTimestamp()
         );