/misc/mod_zebraqueue.pl should the ability to send a 'recordDelete' operation in zebraqueue. My feeling is that mod_zebraqueue.pl should look up the biblio or auth number given; if it doesn't exist, then a 'recordDelete' row should be added to zebraqueue. A --recordDelete option should also be available as an argument to /misc/mod_zebraqueue.pl, in case we need to force a recordDelete for some reason.