Wine staging 5.8 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 5.8 (833 patches are applied to wine vanilla)

Upstreamed (Either directly from staging or fixed with a similar patch).
* ddraw: Remove const from ddraw1_vtbl and ddraw_surface1_vtbl.
* ddraw: Allow writing to vtable for surface and palette
* windowscodecs: Add initial implementation of the GIF encoder.
* windowscodecs: Initialize empty property bag in GIF encoder's 
CreateNewFrame implementation.
* windowscodecs: Add registration of the GIF encoder.
* windowscodecs: Fix IWICBitmapDecoder::CopyPalette for a not 
initialized case in the GIF decoder.
* windowscodecs: Better follow the GIF spec and don't specify the local 
color table size if there is no local palette.
* windowscodecs/tests: Add the tests for GIF encoder and decoder.
* windowscodecs: Correctly indicate that the global info was written 
even without the global palette.
* d3dx9_36/tests: Remove useless \n within some ok messages.
* ddraw/tests: Add more tests for IDirectDraw7::EnumSurfaces.
* ddraw: Implement DDENUMSURFACES_CANBECREATED flag in ddraw7_EnumSurfaces.

Added:
* None

Updated:
* ntdll-WRITECOPY
* wined3d-Indexed_Vertex_Blending
* ntdll-NtSetLdtEntries
* winebuild-Fake_Dlls

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.