Release 8.1 (Patreon)

Summary since last release
* Rebased to current wine 8.1  (475 patches are applied to wine vanilla)

Upstreamed (Either directly from staging or fixed with a similar patch).
* rpcrt4: Avoid implicit cast of interface pointer.
* include: Add _XHR enum values
* ntdll-Builtin_Prot (removed as PE conversion is complete)

Added:
* None

Updated:
* ntdll-Placeholders