service: Refactor spl

[testing] fiber: Double default stack size

system_version: Update to 11.0.1

bsd: Avoid writing empty buffers

Silences log spam on empty buffer writes

system_archive: Update NgWord archive version

time: Assign the current time point to the ClockSnapshot

time: Fix CalculateSpanBetween implementation

video_core: rasterizer_accelerated: Use a flat array instead of interval_map for cached pages.

qt: Set DISPLAY env var when not present

Enable toggle buttons for keyboard and mouse

Stack overflow occurs with some guest applications

CalculateSpanBetween passes in the ClockSnapshots through 2 input buffers and not as raw arguments. Fix this by reading the 2 input buffers instead of popping raw arguments.

Partially fixes Super Smash Bros. Ultimate's Spirit Board

Fixes the timer in Super Smash Bros Ultimate's Spirit Board.

renderer_opengl: Use compute shaders to swizzle BGR textures on copy

buffer_cache: Heuristically decide to skip cache on uniform buffers

InputCommon: Mouse fixes

common: fiber: Use weak_ptr when yielding.

external: Update dynarmic

- Fixes another small leak.

Fixes web browser opening (Help > Open Mods Page, Help > Open Quickstart 
Guide)

- Avoids a memory leak, as taking a strong reference of the fiber here causes a circular reference.
- Supersedes #6006 with a more narrow fix.

hle: kernel: KThread: Rework dummy threads & fix memory leak.

- Dummy threads are created on thread local storage for all host threads.
- Fixes a leak by removing creation of fibers, which are not applicable here.

CMakeLists: Add /utf-8 compile option for MSVC

Revert "core: Switch to unique_ptr for usage of Common::Fiber."

externals: Update mbedtls to 2.16.9

core: Switch to unique_ptr for usage of Common::Fiber.

mbedtls 2.16 is the last version which has licensing for GPL 2.0. This updates mbedtls to our own fork of mbedtls 2.16