RM-1532, RecordServiceImpl.onUpdateProperties now able to recognise that a new vale of false compared to an old value of null for a boolean property is unchanged

git-svn-id: https://svn.alfresco.com/repos/alfresco-open-mirror/modules/recordsmanagement/HEAD@74338 7033f55c-6c29-4ad8-afba-765cb616e738