Fix use of retrieve so we don't get undefined methods if parameters are not defined.

All of these CRM_Utils_Request::retrieve() instances are retrieving URL parameters. If the URL parameter does not exist it tries to retrieve via $this but if get() does not exist on $this it crashes with undefined method.

Eg. Error: Call to undefined method CRM_Contact_Selector_DataProcessorContactSearch::get() in CRM_Utils_Request::retrieve() (line 94 of /home/matthew/buildkit/build/d7master/web/sites/all/modules/civicrm/CRM/Utils/Request.php).

CRM/Contact/Form/DataProcessorContactSummaryTab.php

@@ -118,7 +118,7 @@ class CRM_Contact_Form_DataProcessorContactSummaryTab extends CRM_DataprocessorS
    * @param \Civi\DataProcessor\ProcessorType\AbstractProcessorType $dataProcessorClass
    */
   protected function alterDataProcessor(AbstractProcessorType $dataProcessorClass) {
-    $cid = CRM_Utils_Request::retrieve('contact_id', 'Integer', $this, true);
+    $cid = CRM_Utils_Request::retrieveValue('contact_id', 'Integer', NULL, TRUE);
     CRM_Contact_DataProcessorContactSummaryTab::alterDataProcessor($cid, $this->dataProcessorOutput, $dataProcessorClass);
   }
 }