[linux] systemd-coredumpctl was renamed to coredumpctl, support both in kodi.sh
[Fix] Manually activated subs, if classified as irrelevant, were not shown on resume.
This is fixed by saving the subtitle's index upon manual activation.
Add mk3d to video extensions and enable double cache

(cherry picked from commit 638bb7f3ab2b48fca727c3e92a9c23bd9d5622a9)
Merge pull request #5781 from wsnipex/coredumpctl

[linux] systemd-coredumpctl was renamed to coredumpctl fixes(#15547)
Merge pull request #5779 from anaconda/mk3d-ext

Add mk3d to video extensions and enable double cache
Merge pull request #5762 from ace20022/save_sub_index

[Fix] Some manually activated subs were not shown on resume.
[rbp/omxplayer] When opening a stream don't try to update gui so often
[ffmpeg] Speed up wtv index creation

The index creation is O(N^2) with number of entries (typically thousands).
On a Pi this can take more than 60 seconds to execute for a recording of a few hours.

By replacing with an O(N) loop, this takes virtually zero time
adds GetTvShowSeasons
move AddSeason() public.
adds GetArt function to (video) scraper, allowing art to be fetched given the video identifier.
refresh season art if a new season is found that isn't recorded in the database yet. Fixes #14339
REMOVEME: updated thetvdb.com scraper to support art updates
[omx] Report decoded image name
logging: Add microsecond timer to log messages
[hifiberry] Hack: force it to be recognised as IEC958 capable to enable passthrough options
Move the reference-counting of Begin and End calls from DX and GL source files into GUIFontTTF.cpp.
Convert CGUIFontTTFBase::m_vertex to be managed as a std::vector.

Also retired CGUIFontTTFBase::m_vertex_count and
CGUIFontTTFBase::m_vertex_size because these can be derived from vector
member functions.
CGUIFontTTFBase::RenderCharacter can now append to arbitrary vectors of vertices rather than only CGUIFontTTFBase::m_vertex
Add a cache of font glyph bounding box vertices.

This is implemented as a template because ultimately we will key on different
parameters and store values of different types, depending upon whether we
have a GLES or non-GLES backend, and for GLES, whether or not the currently
applicable transformation matrices permit the use of hardware clipping.