Removed unused functions dupin_attachment_db_p_record_insert() and dupin_attachment_db_p_record_delete()
Fixed potential memory leak on error when inserting inline attachments
Fixed bug when inserting inline attachments, making sure the containign document revision is updated as well.
Completed "ignore_updates_if_unmodified" flag on bulk updates for attachments using dupin_attachment_record_is_unmodified ()