It's not set anywhere.

This requires moving the stack switch to Wow64PrepareForException.

Based on a patch by Paul Gofman.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55927

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55950

This should help understand some virgl/ChromeOS-specific WineD3D
behavior better.

Based on a patch by Michael Müller.

This should more closely match the algorithm used by native, discovered through
extensive manual testing.

This does not include any automated tests, both because I could not get winmm to
recognize a second plugged joystick, and (as I eventually discovered while
testing) the number of tests that would be necessary to conclusively prove this
algorithm turned out to be impractical.

Ensures the Direct 2D lock is held before attempting to access Direct 2D
exclusive resources.

This fixes periodic crashes in PowerPoint 365

Tests that Direct2D can access D2D exclusive resources whilst the
Direct 2D lock is held if the factory type is single threaded