* perl/Amanda/Taper/Protocol.pm: Add READY Message.
* perl/Amanda/Taper/Scribe.pm: Call
  $self->{'feedback'}->scribe_ready();
* perl/Amanda/Taper/Worker.pm (scribe_ready): New method to send the
  READY message.
* server-src/amvault.pl (scribe_ready): New method that do nothing.
* server-src/driver.c: Send dumper result to taper only after it sent
  the READY message.
* server-src/driverio.h (wtaper_t): Add ready.
* server-src/server_util.c (cmdstr): Add READY.
* server-src/server_util.h (enum): Add READY.
* installcheck/Amanda_Taper_Scribe.pl,
  installcheck/taper.pl: Fix check.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/branches/3_3@5638 a8d146d6-cc15-0410-8900-af154a0219e0