* perl/Amanda/Taper/Scribe.pm (set_dump_cb): New method.
* perl/Amanda/Taper/Worker.pm: return FAILED if
  $self->{'xfer_source'}->get_addrs failed.
* server-src/driver.c: Accept a FAILED immediately after a PORT-WRITE.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/trunk@5391 a8d146d6-cc15-0410-8900-af154a0219e0