The exception class named castor::exception::Exception provides the same
functionality as castor::exception::Internal and therefore one of them
had to go for the sake of removing redundant code.

Added logging for the invalidation of diskCopies due to overwrites in another stager. Also fixed missing gcType in several places

Dropped more code related to compatibility mode. The configuration entry in CastorConfig stays to ensure 2.1.14 Stagers run with a 2.1.15 Nameserver

With our current understanding we see no reason for an exception from the
reactor to be used as a reason to stop the tapeserverd daemon.

In the future, one or more specific exception types could be introduced
with their own catch clauses that do in fact require the tapeserverd daemon
to be stopped.

Changed 'path' of files within data pools so that they do not have the extra directory that is the fileid%100

Instead of merging the 2.1.14-12 specific files, this commit
only merges the fixes to be kept for the future and drops the rest.

Improved parsing - patch from RAL. Anyway in the master branch the parsing is delegated to the common PL/SQL code

The labeling of a tape now requires TapeDaemon to have two different types
types of session: data transfer sessions and label sessions.  The reaper
logic of the TapeDaemon parent process has to deal with the end of these
two types of session differently.  In the case of a label session the
TapeDaemon parent process must notify the client of the success or failure
of the label session.

Labeling a tape also requires TapeDaemon to have its first long running
and synchronous request.  Labeling a tape includes mounting and unmounting
that tape which can take several minutes.  The client command-line tool
for labeling tapes should be put on hold whilst the full process of
labeling takes place.

Rewamped deletediskcopy command. Mainly dropped the ability to restage and adapated to new DataPools