The catalogue can receive polymorphic items as input for recording.
The strict sequencing of fSeqs is still enforced.
Currently, 2 items types are recorded: files and placehoders.
Files are recorded to the tape catalogue, while place holders are not,
but they are used to enforce the fSeq sequencing.

Replaced oracle::occi::setVector(occiStmt.get(), 1, archiveFileIdList, SYS, ODCINUMBERLIST) with temporary table TEMP_TAPE_FILE_BATCH

This reverts commit 49190c08.

cta/CTA#212 Verify the tape catalogue enforces the rule that all tape copies have the same file size and checksum.

Fixed.

OracleCatalogue now creates and propagates LostDatabaseConnection exceptions in all the appropriate use-cases

Added CatalogueRetryWrapper.hpp

Corrected handling of LostDatabaseConnection exceptions within OracleCatalogue

OracleCatalogue::deleteArchiveFileByDiskFileId()  should re-connect to database if connection lost.

OracleCatalogue::deleteArchiveFile()  should re-connect to database if connection lost.

Refactored retryOnLostConnection() from OracleCatalogue and RdbmsCatalogue

OracleCatalogue::filesWrittenToTape() should re-connect to database if connection lost.

Revert "cta/CTA#186 CTA should cope with idle database connections being dropped by the database server"

This reverts commit 610e08b3.

OracleCatalogue::filesWrittenToTape() should now transparently re-connect to the database.

Done

This reverts commit 3b1855a8.

The 'SELECT FOR UPDATE' was not the bottle neck.  I am putting it
back for now.

This commit does two things.  Firstly it puts back the call from:

    XrdCtaFile::xCom_deletearchive()

to:

    Scheduler::deleteArchive()

Secondly it moves the reponsibility of logging the
"Archive File Deleted" message from the CTA front-end (XrdCtaFile)
to the CTA catalogue.

Please note that Scheduler::deleteArchive() still does not call
SchedulerDatabase::deleteArchiveRequest().

This commit makes the "eos rm" command idempotent with respect to
the CTA catalogue.  If the "eos rm" command requests the CTA
catalogue to delete a file that does not exist with the CTA
catalogue, then this condition is no longer treated as an error.

Replaced std::mutex and std::lock_guard with there helgrind
friendly drop in replacements threading::Mutex and
threading::MutexLocker.

Done.