All this does is supply a new volume level and a fade time in
nanoseconds for the volume transition to occur within.

Like the other volume setter, this mainly just sets a data member within
the service, nothing too special.

This function passes in the desired main applet and library applet
volume levels. We can then just pass those values back within the
relevant volume getter functions, allowing us to unstub those as well.

The initial values for the library and main applet volumes differ. The
main applet volume is 0.25 by default, while the library applet volume
is initialized to 1.0 by default in the services themselves.

CMakeLists: Raise minimum Boost requirement to 1.66.0

Required due to bugfix in boost for changed template resolving rules in GCC 7.3.0 in C++17 mode

core: Move PageTable struct into Common.

gl_rasterizer: Skip zero addr/sized regions on flush/invalidate.

ipc_helpers: Allow pushing and popping floating-point values

externals: Update opus to latest master

kernel/thread: Actually remove the definition of ExitCurrentThread()

video_core: Refactor to use MemoryManager interface for all memory access.

memory: Simplify rasterizer cache operations.

Correct CNTPCT from using CPU Cycles to using Clock Cycles

Certain values that are passed through the IPC buffer are actually
floating point values, not solely integral values.

Prevents yuzu from getting 2000+ warnings in MSVC in a future change.

This was intended to be removed in
51d7f6bf, but I guess I forgot to
actually save the file like a dingus.

CMakeLists: Remove now-unnecessary GCC special-casing

kernel/thread: Remove WaitCurrentThread_Sleep() and ExitCurrentThread()

# Conflicts:
#	src/video_core/engines/kepler_memory.cpp
#	src/video_core/engines/maxwell_3d.cpp
#	src/video_core/morton.cpp
#	src/video_core/morton.h
#	src/video_core/renderer_opengl/gl_global_cache.cpp
#	src/video_core/renderer_opengl/gl_global_cache.h
#	src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

gpu: Use host address for caching instead of guest address.

Puts the operation on global state in the same places as the rest of the
svc calls.

Rather than make a global accessor for this sort of thing. We can make
it a part of the thread interface itself. This allows getting rid of a
hidden global accessor in the kernel code.

Port citra-emu/citra#3924: "citra_qt: Settings (configuration) rework"

This issue has since been fixed in newer versions of Boost, so we don't
need to worry about this anymore.

video_core/morton: Miscellaneous changes

vk_sampler_cache: Implement a sampler cache

kernel/process: Remove use of global system accessors

gl_rasterizer: Use system instance passed from argument

renderer_opengl/gl_global_cache: Add missing override specifiers

kernel/server_port: Make data members private

core/hle/result: Tidy up the base error code result header.

Port various Citra changes to input_common, including deadzone support