Replaced castor file header with CTA file header

Moved castor::server::
  BlockingQueue
  Semaphores
  AtomicCounter
  AtomicFlag
into cta::threading::

Removed unecessary old code, including propagation of the moved port
Put inplace "make unittests" which now run the unittests through valgrind and helgrind.

Renamed CTA/tapeserver/castor to CTA/tapeserver/castor_checkout in preparation for the moving the sub-directory CTA/tapeserver/castor/castor up the directory tree

Added a new m_moverHandlerPort member to the diskFileFactory class, so the new xroot-c2fs URLs can be implemented.
Propagated the value from castor.conf through the constructors of the DiskThreadPools and the DataTranferSessions.

Propagated references to the watchdog to disk and tape threads and tasks.
Added a maps for storing the count of all errors that occured during the session.
Added propagation of the counts to the initial process.
Added error reporting in disk and tapes threads and tasks by using a string marker
allowing to know which part went wrong in high level exception. Exceptions then
bumps up the count in the watchdog (synchronously), and the watchdog sends the
new count to the initial thread later (in the watchdog's thread).
Plus some missing logs fixed when an exception is thrown in a disk write task.

Added interface to reference the recall watchdog to the recall disk thread pool.
Next: Do same for migration. Actually store the reference. Add new error map storing in watchdog. Add error reporting in tape and disk threads.

WIP: Added missing file ID for disk write thread. Added missing error log when an exception is thrown in a disk write task.

WIP: switching to CASTOR-4839 tapeserverd: task injector should decide on closing the session earlier

WIP. Next: log unmount errors (in the RAII)

Finished error counting in data threads.

The offending message has been changed in a previous case: CASTOR-4749

Reviewed all bandwidth calculations to homogenize the statistics printing.
Fixed a bug where the total time for a session was not properly retrieved before logging, leading to NaN printouts.

CASTOR-4739: tapeserverd should support localfile, rfio, xroot and rados striper access for disk files

Moved the call to getConfEntString(XROOT, PrivateKey, /opt/xrootd/keys/key.pem one step up to allow
unit testing in environments without a castor.conf

Tapeserverd now support file://, root:// rfio:// and radosStriper:// URLs, on top of heuristic protocol guessing from the hostname:[/]path synthax.
The rados striper version is not yet fleshed out yet.
The xroot client used for this is the latest object oriented client (XrdCl::File).

This reverts commit deee4145.

Re-instating wrongly reverted commit.

This reverts commit ea0d44b7.

Reverting the previous commit as Steve wants to handle those changes, as part of a bigger reshuffling.

Added Doxygen comments in DiskWriteTask.hpp.
Reformatted the code in DiskWriteTask.cpp, DiskWriteTask.cpp and added logging.
Removed unnecessary members m_maxFilesReq and m_maxBytesReq from DiskWriteThreadPool and adapted callers.

Thus, The real reporters do not inherit publicly from it => Changed all the lines of coded that had to be changed

Fixed unnecessary virtual declarations in classes without inheritance (only detected by the SLC5 compiler).

Removed interface classes DiskReadTaskInterface, DiskWriteTaskInterface, DiskThreadPoolInterface

Refactored member names in diskWriteThreadPoll and Thread, and moved atomic counters to th Thread pool.

RecallMemoryManager is the memory manager dedicated to the recall. All recall-related files are now using RecallMemoryManager

Thus, threads' begins and ends are logged with the threadID

Changed consequently the types to use the interface instead of the derived type : RecallReportPacker

A shared thread safe variable counts the number of failled writtings and we call reportEndOfSessionWithError at the end if needed

Changed the constructor to take that into account and its calls in several files