Remove HAL
[builtins] don't activate an already active window
[confluence] change channel group by clicking on channels or guide
Merge pull request #5081 from xhaggi/dont-activate-an-active-window

[builtins] don't activate an already active window
Merge pull request #5076 from FernetMenta/pvr-skin

skin confluence: change channel group by clicking on channels or guide
Merge pull request #5077 from topfs2/remove_hal

Remove HAL
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: some rework and documentation
renderer: bump buffers to 5
videoplayer: update frametime, it might change due to fps detection
videoplayer: give streams with invalid fps a chance for fps detection
dvdplayer: allow rewinding at end of stream, do a seek after rewind
dvdplayer: observe pts counter overflow
dvdplayer: avoid short screen flicker caused by unnecessary reconfigure of renderer
vdpau: advanced settings for auto deinterlacing
player: fix rewind
OMXPlayer: some caching fixes for pvr
fix incorrect display of fps when dr kicks in
ActiveAE: slightly reduce buffer size