gl_shader_decompiler: Implement R2P_IMM

Fixed Coordinate Encodings in TEX and TEXS instructions

gl_shader_decompiler: Implement clip distances

video_core: Move morton functions out of gl_rasterizer_cache

svc: Return ERR_INVALID_ENUM_VALUE from svcGetInfo

nvdrv: Implement/stub DumpGraphicsMemoryInfo and GetStatus.

memory_manager: Do not allow 0 to be a valid GPUVAddr.

sm: Implement RegisterService and UnregisterService

filesystem: Clear registered union paths on factory creation

Update OpenGL's backend version from 3.3 to 4.3

Add support for clear_flags register

GDBStub Improvements

Report resolution scaling support for vi and am

patch_manager: Add support for applying LayeredFS patches to ExeFS

gl_shader_decompiler: Rename cc to condition code and name internal flags

- Used by Undertale.

shader_cache: Only lock covered instructions.

software_keyboard: Minor changes

- Fixes a bug with Undertale using 0 for a render target.

applets: Add StubApplet and use it as fallback when AppletId is not implemented

core: Relocate CPU core management to its own class

common/thread: Minor cleanup

* Added predicate comparison LessEqualWithNan

* oops

* Clang fix

gl_shader_decompiler: Fix register overwriting on texture calls

Properly Implemented TXQ Instruction

nvhost_ctrl_gpu: Implement IoctlGetGpuTime.

debug_pad: Avoid loading input for nonexistent buttons (Home and Screenshot)

Prevents memory exceptions when the debug pad is enabled.

maxwell_3d: Implement alternate blend equations.