Special K v 0.9.16

 (.1): Switched to D3DCompiler_47.dll (built-in)
 (.1): Eliminated unnecessary lock contention during texture uploads
 (.1): Fixed Alt+F4 menu in games that mixup Virtual Key Codes with Character Codes

 + Added workaround for systems that do not dispatch user32.dll system calls
     through win32u.dll
 + Added D3D11 Texture Cache residency management, to reduce cache pressure on
     textures that the driver isn't storing in VRAM.
 + Added D3D11 Deferred Context Isolation checkbox to D3D11 settings
 + Added SteamAPI callback count to thread monitoring info