Done.

CASTOR-4798: tapeserverd should internally validate the fSeq of file being currently written to tape

Added fSeq tracking to the tapeFile::WriteSession and added the corresponding
calls in the tape write task.

Replaced an ad-hoc loop by a more standard and efficient remove-erase in castor::log::LogContext::erase

The variable m_bytesBeforeFlush was erroneously set to m_castorConf.maxBytesBeforeFlush/m_castorConf.bufsz
instead of simply m_castorConf.maxBytesBeforeFlush in DataTransferSession::executeWrite. Fixed this.

I believe the Timer class is generic enough to be used by any
part of CASTOR and not just tape.

Only the tapegatewayd daemon uses the BoolFunctor class.

Only the tapegatewayd daemon uses the ShutdownBoolFunctor class.

Found and removed some left over manual page text that still
referred to the RMC/HOST configuration parameter.

Fixed

Unit tests are now implemented using gtest.  Unit tests
implemented with CppUnit are now obsolete.

The ProcessForker can impose "entire lifetime" or "per mount"
refreshes of CASTOR configuration-parameters.  There is no
need for the tapeserverd parent process to do this and send
the results over the wire.

The ProcessForker can impose "entire lifetime" or "per mount"
refreshes of CASTOR configuration-parameters.  There is no
need for the tapeserverd parent process to do this and send
the results over the wire.

The ProcessForker can impose "entire lifetime" or "per mount"
refreshes of CASTOR configuration-parameters.  There is no
need for the tapeserverd parent process to do this and send
the results over the wire.

This reverts commit 5f4306f2.

Conflicts:

	h/serrno.man

This reverts commit a01400c4.

Conflicts:

	common/serror.c
	h/serrno.h

There will be separate rmcd and acsd daemons, therefore
removing the need for an rmcd "super-daemon" that does both
SCSI and ACS.

The corresponding tape libraries have also been removed, at the exception of tpstat and tpconfig, which are still in use.
Their protocol has been re-implemented in tapeserverd. The configuration file TPCONFIG is also still kept in the tape/ directory.

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

Changed the behaviour in case of non-URL paths(*): if we get Ceph non-URL path, we open
the path (which always points to localhost) via the castor2fs xroot extension. In this
case, we add the castor2fs.pool parameter to the path. We also force to port number
to castor2fs's 1095. This will allow access to ceph via  local xroot translation deamon
running on the tape server's host.

The code has been factored out to allow also bare Xroot accesses with full URLs.

(*) Non-URL path is the current path description exchanged between tape gateway and
tape server, in the form <server>:<pool>/<object name> for ceph objects and
<server>:/path/to/the/file for xroot files.

Conflicts:
	debian/control

We no longer execute the watchdog logic whilst a tape is being mounted.