Log Message:
mpv: Update multimedia/mpv to 0.27.0

pkgsrc changes:
- Delete 2nd hunk of patches/patch-audio_out_ao__oss.c, it was fixed uptsream
  and it is no more needed for 0.27.0.

Changes:
0.27.0
======
Features
--------
Added
~~~~~
- Windows: handle media keys
- libmpv: options: add a thread-safe way to notify option updates
- vd_lavc/vo_opengl: support embedded ICC profiles
- vo: rendering API abstraction for future non-GL video outputs
- vo_opengl: add a gamut warning feature to highlight out-of-gamut colors \ 
(--gamut-warning)
- vo_opengl: add direct rendering support (--vd-lavc-dr)
- vo_opengl: implement (faster) compute shader based EWA kernel
- vo_opengl: implement HLG OOTF inverse
- vo_opengl: support HDR peak detection (--hdr-compute-peak)
- vo_opengl: support float input pixel formats
- vo_opengl: support loading custom user textures (#4586)
- vo_opengl: support user compute shaders

Removed
~~~~~~~
- Remove video equalizer handling from vo_direct3d, vo_sdl, vo_vaapi, and vo_xv \ 
(GPL, not worth the effort to support legacy VOs)

Options and Commands
--------------------
Added
~~~~~
- macOS: add --no-native-fs option to disable the native macOS fullscreen (#4014)
- player: add --track-auto-selection option

Changed
~~~~~~~
- input: use mnemonic names for mouse buttons, same as Qt: \ 
https://doc.qt.io/qt-5/qt.html#MouseButton-enum
- options: change --loop semantics
- player: make --lavfi-complex changeable at runtime
- vf_eq: remove this filter (GPL; uses libavfilter’s eq filter now, with \ 
changed semantics)
- video: change --deinterlace behavior
- vo_opengl: generalize HDR tone mapping to gamut mapping, --hdr-tone-mapping \ 
→ --tone-mapping

Removed
~~~~~~~
- --field-dominance (GPL-only author, no chance of relicensing)
- input: drop deprecated "osd" command
- options: drop --video-aspect-method=hybrid (GPL-only)

Fixes and Minor Enhancements
----------------------------
- TOOLS/autocrop.lua: fix cropdetect black limit for 10-bit videos
- TOOLS/lua/autodeint: update to lavfi-bridge
- TOOLS/lua/status-line: improve and update
- af_lavrresample: don't call swr_set_compensation() unless necessary (#4716)
- ao_oss: fix period_size calculation (#4642)
- ao_rsound: allow setting the host
- audio: fix spdif mode
- filter_kernels: correct spline64 kernel
- macOS: fix media keys input when other Apps steal the priority (#4834)
- macOS: fix the support of multiple renderers (GPU switch) (#2371)
- macOS: remove the standard "Show Tab Bar" menu item
- options: fix --include (#4673)
- player: fix --end with large values (#4650)
- player: fix confusion in audio resync code (#4688)
- player: make refresh seeks slightly more robust (#4757)
- player: readd smi subtitle extension (#4626)
- vd_lavc: change auto-probe order to prefer cuda over vdpau-copy
- vd_lavc: fix device leak with copy-mode hwaccels (#4735)
- vd_lavc: fix hwdec compatibility with yuvj420p formats
- vd_lavc: fix mid-stream hwdec fallback
- vf_vapoursynth: fix inverted sign and restore 10 bit support (#4720)
- video: increase --monitorpixelaspect range
- vo_opengl: adjust the rules for linearization (#4631)
- vo_opengl: scale deband-grain to the signal range
- vo_opengl: tone map on the maximum signal component
- x11: fix that window could be resized when using embedding (#4784)
- ytdl_hook: resolve relative paths when joining segment urls (#4827)
- ytdl_hook: support fragments with relative paths, fixes segmented DASH