Update third party dependencies

Target: trunk
Require-notes: no
Require-book: no
Acked-by: Karsten Schwank <karsten.schwank@desy.de>
Patch: https://rb.dcache.org/r/7108/
Update to DataNucleus 4

Target: trunk
Require-notes: no
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: https://rb.dcache.org/r/7109/
deb: Add python-psycopg2 as a recommended dependency

Needed by dcache-star.

Target: trunk
Request: 2.9
Request: 2.8
Request: 2.7
Request: 2.6
Require-notes: yes
Require-book: yes
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: https://rb.dcache.org/r/7091/
pool: Add file count to 'info' output

By request of our admins.

Target: trunk
Require-notes: yes
Require-book: no
Acked-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Patch: https://rb.dcache.org/r/7081/
src: remove obsolete code

Acked-by: Gerd Behrmann
Target: master
Require-book: no
Require-notes: no
src: more obsolete code

Acked-by: Karsten Schwank
Target: master
Require-book: no
Require-notes: no
src: kill more obsolete code

Acked-by: Paul Millar
Target: master
Require-book: no
Require-notes: no
src: kill more of obsolete code

Acked-by: Karsten Schwank
Target: master
Require-book: no
Require-notes: no