- This is closer to pre-multicore behavior, and works a bit better.

- This breaks things, and is unnecessary, since emulation will be done at this point.

video_core: Resolve more variable shadowing scenarios pt.2

Migrates the video core code closer to enabling variable shadowing
warnings as errors.

This primarily sorts out shadowing occurrences within the Vulkan code.

video_core: Resolve more variable shadowing scenarios

Port citra-emu/citra#5617: "Fix telemetry-related exit crash from use-after-free"

system_version: Update to 11.0.0

Co-Authored-By: xperia64 <xperia64@users.noreply.github.com>

codec: Remove deprecated usage of AVCodecContext::refcounted_frames

This was only necessary for use with the
avcodec_decode_video2/avcoded_decode_audio4 APIs which are also
deprecated.

Given we use avcodec_send_packet/avcodec_receive_frame, this isn't
necessary, this is even indicated directly within the FFmpeg API changes
document here on 2017-09-26:

https://github.com/FFmpeg/FFmpeg/blob/master/doc/APIchanges#L410

This prevents our code from breaking whenever we update to a newer
version of FFmpeg in the future if they ever decide to fully remove this
API member.

Resolves variable shadowing scenarios up to the end of the OpenGL code
to make it nicer to review. The rest will be resolved in a following
commit.

node: Eliminate variable shadowing

vp9/vic: Resolve pessimizing moves

Kernel: Refactor to use 4-instances of Dynarmic & various cleanups and improvements

Prevents logic bugs from accidentally ignoring the return value.

mouse_input/mouse_poller: Minor cleanup

Removes the usage of moves that don't result in behavior different from
a copy, or otherwise would prevent copy elision from occurring.