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

Please note that only the interfaces have been modified.  There is no
implementation behind them - it's all vapourware.

Conflicts:
	castor/tape/tapeserver/daemon/RecallTaskInjector.hpp

Changed a few includes from RecallTaskInjector to forward decleration and had to add them back in orther files

Added a bunch of comments to TapeWriteTask, TapeWriteSingleThread, TapeSingleThreadInterface, TapeReadSingleThread

Because it was never set up mcorrectly and hard coded to zero