[pvr] fix: changed thumbnail not instantly applied in channel list
(Ticket #14820)
change the way 4K resolution is determined.

Older versions of
tvheadend incorrectly report 1080i channels as having 1088 vertical
pixels so they got classified as 4K. The algorithm is now changed
to consider source as 4K only when the total pixel count exceeds
6 megapixels.
archives: avoid collapsing archive with single folder

We have historically used the m_bIsFolder after this as a flag,
to skip display of file. For example for rar 00X part files.

By not collopsing single folders, we can properly browse into
them again.
Strings: Update description and setting name for multi thread frame decoding
DVDVideoCodecFFmpeg: Disable hw acceleration when frame threading is enabled
Settings: Disable vdpau / vaapi / dxva2 / openmax if frame threading is selected
fixed: crash on exit when playing a file via upnp's "play with" (fixes #14559). We called stop on a player (upnp) which service was already stopped.
[bluray] Indentation cosmetics.
[bluray] Add debug logging.
[Fix][bluray] bd_menu_call( , ) returns 0 in case of a failure.
changed: Enable multicache for mkv files (fixes #13841)
changed: We should always check for multistream when caching
Merge pull request #3963 from arnova/mkv_multi_cache

changed: Enable multicache for mkv files (fixes #13841)
Merge pull request #4056 from wsoltys/fix_upnp_crash

fixed: crash on exit when playing a file via upnp's "play with"
[PVR] bump add-ons (win32 bugfix)
Merge pull request #3950 from fritsch/warning-text

Don't use hw decoders when doing multithreaded decoding
dvdplayer: use startpts as a time reference if no other is available

This avoids display of wrong time after seek, due to lack of timestamps
dvdplayer: remove code that set limit on smallest frame rate

This skips the "slow" motion video after seek, by instead starting
playback when next frame is to be displayed
dvdplayer: always output the first frame after seek/startup without wait

This make sure we get something new on display after seek, even if
the next frame is to be displayed sometime later
dvdplayer: avoid busy waiting for video renderers to get a buffer