Issue #1468244 by amateescu, aspilicious: Convert DrupalQueue system to PSR-0.

core/includes/common.inc

core/includes/form.inc

core/lib/Drupal/Core/Queue/Batch.php

core/lib/Drupal/Core/Queue/BatchMemory.php

core/lib/Drupal/Core/Queue/Memory.php

core/lib/Drupal/Core/Queue/QueueInterface.php

core/lib/Drupal/Core/Queue/ReliableQueueInterface.php

core/lib/Drupal/Core/Queue/System.php

core/modules/aggregator/aggregator.module

core/modules/simpletest/simpletest.info

core/modules/simpletest/tests/queue.test

core/modules/system/system.api.php

core/modules/system/system.info

core/modules/system/system.queue.inc

core/modules/system/system.test

core/modules/update/update.fetch.inc

core/modules/update/update.install