Wine staging 5.14 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 5.14 (639 patches are applied to wine vanilla)

NOTE: Currently the esync patchset has been disabled until it can be 
rebased.

Upstreamed (Either directly from staging or fixed with a similar patch).
* ntdll: Include <signal.h> for sigset_t
* ntdll: Fix NtGetContextThread on i386 with PE syscall thunks.
* winevulkan: Avoid returning 0 for swapchain maxImageCount.

Added:
* [35254] findstr: Add minimal implementation

Updated:
* ntdll-WRITECOPY

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.