[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.
AE: add settings to enable ac3 transcode and upmix via ac3 transcoding
ActiveAE: implement settings for ac3 transcode and upmix
AE: rename setting speaker configuration
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.
Merge pull request #4025 from FernetMenta/audiopage

AE: add settings for ac3 transcode and ac3 upmix
fixed: Only force cache for video else it may cause a thread-storm
Merge pull request #4027 from arnova/file_cache_not_for_all_fix

fixed: Only force cache for video else it may cause a thread-storm
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