CRM-12259 suppress Master Address Belongs To from list of fields

available to profiles

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* CRM-12259: Bulk update with shared address fails
  http://issues.civicrm.org/jira/browse/CRM-12259

CRM/Core/BAO/UFField.php

@@ -849,6 +849,7 @@ SELECT  id
 
     // Internal field not exposed to forms
     unset($fields['Contact']['contact_type']);
+    unset($fields['Contact']['master_id']);
 
     // convert phone extension in to psedo-field phone + phone extension
     //unset extension