An equivalent enum already exists within address_arbiter.h

This prevents some games (like Super Mario 3D Land) from freezing when trying to launch it, however, it's not complete and won't let you go past Mii selection as the parameter structure hasn't been reverse engineered yet.

This was removed in Dolphin as there were no particular uses for it.
I'm sure the same will apply to citra.

The gl rasterizer already uses alignas,
so we may as well move everything over.

There's no reason to allow direct access to the unique_ptr instance. Only
its contained pointer.

Add error popup when citra initialization failed

Pipe 2 is a DSP pipe that is used to initialize both the DSP hardware (the
application signals to the DSP to initialize) and the application (the DSP
provides the memory location of structures in the shared memory region).

This has been confirmed on hardware. Fixes Etrian Odyssey IV.

This is useful for all sorts of things, but mainly to identify save
folders more easily.

citra: Remove GLFW, Add SDL2

FindSDL2: Do not CACHE SDL2_* variables if library is not found

EmuWindow_SDL2: Set minimal client area at initialisation time

EmuWindow_SDL2: Corrections

EmuWindow_SDL2: Fix no decorations on startup on OS X

cmake: windows_copy_files

This commit:
* Adds a new subproject, audio_core.
* Defines structures that exist in DSP shared memory.
* Hooks up various other parts of the emulator into audio core.

This sets the foundation for a later HLE DSP implementation.