Wine staging 4.0-rc4 release

[Alistair Leslie-Hughes]

Binary packages for various distributions will be available from:
https://www.winehq.org/download

Summary of the past few weeks
* Rebased to current wine 4.0-rc4 (830 patches are applied to wine vanilla)
* Reviewed and upstreamed patches.

Upstreamed (Either directly from staging or fixed with a similar patch).
* urlmon/tests: Add test for opening cache file with DELETE access.
* appwiz.cpl: Copy addons to cache instead of moving.

Where can you help
* Run Steam/Battle.net/UPlay.
* Try you favorite game.
* Test your favorite applications.
* Steal staging patches and get them accepted upstream.

As always, if you find a bug, please report it via
https://bugs.winehq.org

Best Regards
 Alistair.