Conflicts:
	objectstore/ArchiveQueueAlgorithms.cpp
	objectstore/GarbageCollector.cpp
	objectstore/Helpers.cpp
	objectstore/RetrieveRequest.cpp
	objectstore/RootEntry.cpp
	scheduler/OStoreDB/OStoreDB.cpp

Upgraded to EOS 4.4.19-1 in order to get the version of the 'file archived' garbage collector that can be configured 'on' or 'off'.  By turning the 'file archived' garbage collector 'off' we will be able to to test the MGM LRU garbage collector more easily.

(see 'ps -ax -o "pid comm cmd"  | grep /usr/bin/cta-taped').

The maintenance handler provided a negative timeout when its round too long. This
led to infinitely sleeping on a poll instead of a timeout of 10s max.

Added the first version of the specification of the Catalogue::getTapeFilesForRepack() method - there's no implementation yet

Created subrequest pointer in RepackRequest serialization.
Created initial scheduler database repack request.
Removed duplicate function in Scheduler.

Conflicts:
	continuousintegration/docker/ctafrontend/cc7/buildtree-stage1-rpms/Dockerfile

This will prevent trim-against-create fights between 2 processes where a process
trying to create a new queue to push abandons after 5 retries.

of VO and Density"

Conflicts:
	scheduler/SchedulerTest.cpp

RequestMessage::processTape_Ch() now calls m_catalogue.modifyTapeMediaType() and m_catalogue.modifyTapeVendor() so that 'cta-admin tape ch' now supports '--mediatype' and '--vendor'

Upgraded to EOS 4.4.18-20181211213834git95c105 in order to get a version of EOS that uses v0.29 of xrootd-ssi-protobuf-interface which provides the renewable resources option

Upgraded to EOS 4.4.18-20181211164351git06ae732 in order to get fixes for FSTs not reporting failed close calls when used with CTA and for problems with prepare permissions

Added MEDIA_TYPE and VENDOR columns to TAPE table and upgraded xrootd-ssi-protobuf-interface to v0.29

This promotion is controlled so that only a limited number a requests
are in the
state ToExpand or Starting at any point in time. This ensures both the
availabality
of repack file requests to system while preventing an explosion of file
level requests.

Created a one-round popping from the container (algorithms) with status
switching.
  - Used for repack requests switching from pendig to to expand

Added ElementStatus to algorithms.

Implemented promotion interface in Scheduler and OstoreDb. The actual
decision is taken at
the Scheduler level. The function itself is called by the
RepackRequestManager.

Promotion is tested in a unit test.

Various code maintenance:
Switched to "using"-based constructor inheritance.
Fixed privacy of function in cta::range.

Upgraded to EOS 4.4.17-20181204103742gitf66a3fa for added crosstalk protection between EOS/CTA instances and to have an FST that does not send the MGM close and sync::close events

Revert "Replaced the configuration of the asynchronous sys.workflow.closew.retrieve_written event with the synchronous one, i.e. sys.workflow.sync::closew.retrieve_written"

This reverts commit d591b0de.