Factored a first function out of OStoreDB into Herlpers.

Failing to report a migration is non-fatal, as succesfully written files can still be reported afterwards.
synchronousReportEndWithErrors had to be rewritten as instanciating and calling a report would have created a race condition.

The demangling has been ported in other places where RTTI was also used.

Fixed closing file descriptor -1 for lock some (legitimate) error cases of BackendVFS::ScopedLock().

Adapted unit tests to validate this fetching.

This reverts commit 676e1eee.

This is a revert of a revert that at the end of the day causes
a stuck data transfer process to core dump when the mother
process times it out.  In detail the mother process now sends
a SEGV signal to a stuck data transfer process.

This will give us a core dump with valuable context. Without this change, the process already
core dump, but we don't get exception info.

cta-taped config is now in /etc/cta/cta-taped.conf and the logs are collected in /var/log/cta/cta-taped.log so that we can download them as artifacts. Fixed a minor bug in run_systemtest.sh where the namespace was deleted upon test failure when -k option was set.

concerning this issue.

All CTA catalogue configuration entities (archive route, tape,
tape pool, etc.) except for archive file and tape file are now
ordered alphabetically.

Archive files and tape files are ordered by archive ID and copy
number.  This ordering is required so that we can implement our
own application level cursor over potentionally all archived
files.  This could be well over 4 billion files.  We do not
rely on database cursors as they would most fail before we have
had enough time to list all archived files.

If in the future we require a file listing command that orders
achive files alphabeltically, then I would suggest the
cta::Catalogue class implements two separate methods.  The
first implementation would list all files in archive ID order
and would not rely on the underlying database to implement the
cursor.  iBasically whta we have today.  The second
implementation would list all files in alphabetcial order and
would rely on the underlying database to achieve this.

Simplified handling of already (or soon to be) mounted tapes.
Added support for next mounts.
Added logging of decision steps.

Added during investigation of scheduling issues.
Not used currently but will be usefull when implementing session preemption.

We now use protobuf's introspection to dump objects into JSON instead of ad-hoc code
using json-c.

The different processes of taped can now be identified as in this exemple:
[eric@localhost ~]$ ps -ax -o "pid comm cmd"  | grep /usr/bin/cta-taped
[...]
32593 cta-taped-main  /usr/bin/cta-taped -fl /cta-taped.log
32800 cta-tpd-VDSTK11 /usr/bin/cta-taped -fl /cta-taped.log
32801 cta-taped-gc    /usr/bin/cta-taped -fl /cta-taped.log

Rao branch

See merge request !2

Signed-off-by: Cristina Moraru <cristina-gabriela.moraru@cern.ch>

Signed-off-by: Cristina Moraru <cristina-gabriela.moraru@cern.ch>

With respect to the RadosStriperPool class,
replaced std::mutex and std::lock_guard by
threading::Mutex and threading::MutexLocker.

With respect to the GetOptThreadSafe class,
replaced std::mutex and std::lock_guard by
threading::Mutex and threading::MutexLocker.

Removed last use of std::mutex from the rdbms library

Added cta::threading::CondVar.

The new CondVar class is a C++ wrapper around a
pthread condition variable.