Make old uploaded file revision contain their timestamps, not the
timestamps of a following revision.

Change-Id: Ibd12146e11f18c34c34aa2c496e243f0c9e8695e
Quick monkey-patch for MW Bug 37209.

Now Title does not rely on entries already being in the LinkCache.
This fixes "LinkCache doesn't currently know about this title" error
in some cases, for example, in the case when LinkCache is flushed.

Change-Id: I2fc3966ee5d462ba050a6c54cfda1a0dfd972635
Totally improved MediaWiki Import/Export engine with conflict detection,
advanced page selection for export and support for exporting file data over
HTTP or inside the export file.

Requires old upload timestamp patch and running maintenance/renameOldUploads.php
when applied to a non-empty MediaWiki installation.

MediaWikiBug 22881 - Greatly improved Export and Import
https://bugzilla.wikimedia.org/show_bug.cgi?id=22881

Change-Id: Ie548ae25de63049d03cd72206c6bb518cea3f6d3