This reverts commit 3f5acac2.

The CTA/tapeserver/castor directory started as a partial is copy of a git
checkout of:

    https://:@git.cern.ch/kerberos/CASTOR

at the following commit:

    commit f4cb056d
    Author: Sebastien Ponce <sebastien.ponce@cern.ch>
    Date:   Wed Jul 15 09:15:29 2015 +0200

        Close properly hbase connections in case of broken pipe, avoiding socket leak

Homogeneize the naming: removed mixtures of archival and archive in favor of the latter. Same the retriv{e,al}.
Renamed file transfers to tape jobs as a single file can required several jobs (in the case of nultiple copies).

Garbage collection will still be able to pick up the pieces in case of exception.

object with callbacks, like for the archival request creation.
Implemented this interface in both Mock and ObjectStore implementations of the
SchedulerDatabase.

Updated to match new structure of remote files.
Removed now unused fileEntryCreatedInNS function from all scheduledDatabases.

This simplifies to management of the 3 step operation in the DB:
- Create a request in the scheduler DB
- Create the coresponding files in the name server
- Mark the request as good to go and queue it in the tape pools, or
  delete it.

In addition, the destructor of the creation object allows early
garbage collection in case operation was not completed correctly
(failure to call complete() or cancel())