- Add cache regeneration post/postun scriptlets to gstreamer-codec
subpackage.

- Update to Version 3.0.0:
+ Core:
- Support network browsing for distant filesystems (SMB, FTP,
SFTP, NFS...) and rewrite the parsing of the media files and
inputs.
- Support keystores: fetch and store passwords securely (sic!)
for common protocols (HTTP, SMB, SFTP, FTP, RTSP ...).
- Autodetect external audio tracks (ac3, m4a, aac, dts...)
similar to subtitles.
- Support HDMI passthrough for Audio HD codecs, like E-AC3,
TrueHD or DTS-HD.
- Support for 12bits codec and extended colorspaces (HDR).
- Support output renderers, like ChromeCast.
- VLC now assumes vlcrc config file is in UTF-8.
- Support portable version of Windows build (create a
"portable/" folder).
- Support wayland surface type.
- Allow to start the video paused on the first frame.
- Refactor preparsing input.
- EPG rework: table and single event updates, now using network
time.
- Refactor and fix subtitles es selection. Demuxers can now
override es category single only or multiple es behavior.
- Support for 360 video and audio, including viewpoint
modification.
- Support for ambisonic audio and more than 8 audio channels.
- Support subtitles size live adjustments.