Wine staging 4.21 release

[Alistair Leslie-Hughes]

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

Summary since last release
* Rebased to current wine 4.21 (833 patches are applied to wine vanilla)

Upstreamed (Either directly from staging or fixed with a similar patch).
* none

Added:
* [47668] kernelbase: Improve stub for ReOpenFile and add small test
* [48138] League of Legends 9.23: Crash after champ select
* [47970] Legends of Runeterra crashes at launch
* [40334] AION - Wine /Unhandled exception: page fault on read access to 
0x00000000 in 64-bit code (0x0000000000000000).
* [48175] AION (64 bit) - crashes in crysystem.dll.CryFree() due to high 
memory pointers allocated
* [46568] 64-bit msxml6.dll from Microsoft Core XML Services 6.0 redist 
package fails to load (Wine doesn't respect 44-bit user-mode VA 
limitation from Windows < 8.1)

Updated:
* d3d9-Direct3DShaderValidatorCreate9
* winecfg-Staging

Where can you help
* Run Steam/Battle.net/GOG/UPlay/Epic
* Test your favorite game.
* Test your favorite applications.
* Improve 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.