citra-qt: save path for recent files loaded

vfp: use std::swap where applicable

Handle invalid `Log::Class`

Vertex Shader JIT for X86-64

- Config: Add an option for selecting to use shader JIT or interpreter.
- Qt: Add a menu option for enabling/disabling the shader JIT.

- Also renames "vertex_shader.*" to "shader_interpreter.*"

Add a case of `Log::Class::Count` to the switch statement that
dispatches on `Log::Class`.  The case simply calls the `UNREACHABLE`
macro.

debugger: Add the ability to view VFP register contents

Stop defining GCC always_inline attributes as __forceinline

__forceinline is a MSVC extension, which may confuse some people working on the codebase.
Furthermore, the C++ standard dictates that all names which contain adjacent underscores are reserved.

Replace standard uint*_t and int*_t with CommonTypes’ u* and s* types

ARM Core, Video Core, CitraQt, Citrace: Use CommonTypes types instead of the standard u?int*_t types.

OpenGL: Fix state tracking in situations with reused object handles

arm_disasm: ARMv6 media instructions

This menu is only for ROM and will not save symbols recently loaded.
When the menu is empty, the menu is disabled (greyed out)

SMLAD, SMUAD, SMLSD, SMUSD, SMLALD, SMLSLD,
SMMLA, SMMUL, SMMLS
USAD8, USADA8

{S, U, Q, UQ, SH, UH}{ADD16, ASX, SAX, SUB16, ADD8, SUB8}

REV, REV16, REVSH
Only their ARM encoding, Thumb encoding is still missing.

SSAT, SSAT16, USAT, USAT16

PKH, SEL
SXTAB, SXTAB16, SXTB, SXTB16, SXTH, SXTAH
UXTAB, UXTAB16, UXTB, UXTB16, UXTH, UXTAH

arm_disasm: Remove unnecessary code

This part of disassembly only determines the opcode, there's no need for offset calculation here.

Disassembler: ARMv6K instructions