Wine staging 5.5 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 5.5 (853 patches are applied to wine vanilla)

Upstreamed (Either directly from staging or fixed with a similar patch).
* wined3d: Multiple games need WINED3D_TEXF_ANISOTROPIC filter mode.
* wineqtdecoder: Fix compilation.
* d3d11/tests: Add basic dual source blend test.
* wined3d: Implement dual source blending.
* server: When combining root and name, make sure there is only one slash.

Added:
* [41275] Winemenubuilder should respect existing defaults for filetype 
associations.
* [48832] winmm: Use _lopen to avoid the 128 character path limit.

Updated:
* xactengine-initial
* ddraw-Rendering_Targets
* wined3d-SWVP-shaders
* wined3d-Indexed_Vertex_Blending
* ntdll-RtlIpv4StringToAddress

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.