Fix and update languages codes for Czech and Chinese.
[pvr] fix internal group loading

As we never load the internal groups from our TV database, changing the group name in our group manager has no effect. This fixes the loading of the internal channel groups.
[pvr] cosmetics: refactor internal group id constants to be more meaningful
DVDPlayerAudio: Present correct channel count
AESinkPULSE: Make cppcheck more happy
fix memory problems pointed out by valgrind in AE. See the PR comments for more details.
Merge pull request #5387 from fritsch/aepulsecppcheck

AESinkPULSE: Make cppcheck more happy
Merge pull request #5383 from fritsch/fixchannelinfo

DVDPlayerAudio: Present correct channel count
Merge pull request #5389 from jimfcarroll/ae-mem-fixes

fix memory problems pointed out by valgrind in AE.
DXVA-HD: return false if OpenProcessor fails
Merge pull request #5379 from ace20022/ces_zho

Fix and update languages codes for Czech and Chinese.
Merge pull request #5370 from FernetMenta/dxva

DXVA: fixes and rework
vaapi: flush ffmpeg buffers if it holds any refs on close
vaapi: drop unused member
renderer: bump number of buffers for vdpau and vaapi
[kodi] add splash with (TM)
Merge pull request #5391 from FernetMenta/vaapivdpau

Vaapivdpau: fix and optimization
[win32] fix detection of old XBMC install and remove XBMC regkeys
[win32] show message in installer that userdata was moved to new location
Merge pull request #5376 from xhaggi/pvr-fix-internal-group-loading

[pvr] fix internal group loading