Log Message:
mpv: Update to 0.30.0

pkgsrc changes:
 - Drop dependency to libdvdread, no longer supported in favour of libdvdnav
 - Remove `v4l2' option, option was removed and no longer supported
 - Remove patch-audio_out_ao__oss.c, applied upstream

Changes:
Release 0.30.0
==============
This release requires FFmpeg 4.0 or newer.
This release has replaced the internal Vulkan rendering abstraction
with libplacebo's more up-to-date implementation.

Features
--------
Added
~~~~~
- vo_gpu: vulkan: hwdec_cuda: Add support for Vulkan interop
- command: support for async commands
- input: support for named arguments
- cocoa-cb: add support for mac 10.14 Dark mode and run time switching
- vo_gpu: switch to Vulkan API implementation based on libplacebo
- context_drm_egl: Add support for presentation feedback
- vo_gpu: implement error diffusion for dithering
- vo/gpu: hwdec_vdpau: Support direct mode for 4:4:4 content
- vo_gpu: hwdec_vaapi: Add Vulkan interop
- video, TOOLS: add vf_fingerprint and a skip-logo script
- vo_gpu: d3d11: add support for presentation feedback
- vo_drm: 30bpp support
- cocoa-cb: add support for 10bit opengl rendering
- video: add pure gamma TRC curves for 2.0, 2.4 and 2.6
- vo_drm: Implement N-buffering and presentation feedback
- Reintroduce vo_wayland as vo_wlshm
- video: add zimg wrapper
- wayland: add presentation time
- input: add gamepad support through SDL2

Changed
~~~~~~~
- cocoa-cb: use libmpv's advanced rendering control and timing
- vo_gpu: improve tone mapping desaturation
- vo_gpu: redesign peak detection algorithm
- vo_gpu: allow boosting dark scenes when tone mapping
- osc: improve look of seekranges
- vo_gpu: x11: remove special vdpau probing, use EGL by default
- demux: sort filenames naturally when playing a directory / archive
- stream_dvb: rewrite channel switching, remove old stream control
- filters: extend vf_format so that it can convert color parameters

Removed
~~~~~~~
- demux, stream: rip out the classic stream cache
- vo_gpu: removed internal Vulkan implementation
- Remove libdvdread support in favor of libdvdnav
- demux, stream: remove much of the optical disc support
- Remove classic Linux analog TV support, and DVB runtime controls
- demux, stream: remove old rar support in favor of libarchive
- vo_gpu: remove mali-fbdev
- vo_gpu: remove vdpau/GLX backend
- vf_vapourynth: remove Lua backend
- vo_gpu: remove hwdec_d3d11eglrgb

Options and Commands
--------------------
Added
~~~~~
- command: add a subprocess command
- vo_gpu: added --tone-mapping-max-boost, --hdr-peak-decay-rate,
  --hdr-scene-threshold-low/high
- player: add --demuxer-cache-wait option
- Implement backwards playback
- demux: add a on-disk cache
- demux, command: add another stream recording mechanism, `dump-cache` command
- ao_pulse: add --pulse-allow-suspended
- command: add video-add/video-remove/video-reload commands
- demux_cue: added --demuxer-cue-codepage to select CUE sheet charset
- input: add keybind command
- command: add sub-start & sub-end properties
- video/d3d11: added --d3d11-adapter to select a rendering adapter by name
- vo_gpu/d3d11: added --d3d11-output-format for configuring swap chain format

Changed
~~~~~~~
- vo_gpu: split --linear-scaling into --linear-upscaling and
  --linear-downscaling
- vo_gpu: split --tone-mapping-desaturate into strength and exponent
- drm: rename --drm-osd-plane-id to --drm-draw-plane, --drm-video-plane-id to
  --drm-drmprime-video-plane, --drm-osd-size to --drm-draw-surface-size

Deprecated
~~~~~~~~~~
- options: deprecate --video-aspect, replaced by --video-aspect-override
- options: deprecate --record-file, --spirv-compiler

Removed
~~~~~~~
- options: remove deprecated --chapter option
- demux: remove "program" property
- stream: remove "disc-titles", "disc-title", \ 
"disc-title-list", and "angle"
  properties
- cocoa-cb: remove --macos-title-bar-style, replaced by
  --macos-title-bar-material and --macos-title-bar-appearance
- spirv: remove support for --spirv-compiler=nvidia (shaderc is the only
  remaining option)

Fixes and Minor Enhancements
----------------------------
- context_drm_egl: implement n-buffering
- cocoa-cb: add support for custom colored title bar
- vo_gpu: x11egl: support Mesa OML sync extension
- demux, demux_edl: add extension for tracks sourced from separate streams
- context_drm_egl: Use eglGetPlatformDisplayEXT if available
- vo_gpu: vulkan: add Android context
- wayland: use xdg-decoration if available
- vo_gpu: glx: use GLX_OML_sync_control for better vsync reporting
- demux: runtime option changing for cache and stream recording
- x11: fix ICC profiling for multiple monitors
- zsh completion: move generation to runtime and improve