[gui] adds listitem info label inprogress to determine if epg item is in progress

This adds a new listitem info label inprogress which indicates if the
associated epg tag points to a current ongoing program.
libdvdcss-1.2.12 removed _XBOX unneeded patches
libdvdcss-1.2.12 updated diff files
libdvdcss update to 1.2.13 - incl diff file
libdvdread-libdvdnav update to 4.2.1
libdvdread-libdvdnav - remove unused xbmc patches
libdvdread-libdvdnav - updated diff files
[epg] get rid of orientation support
Added Container.IsUpdating
[epg] cleanup: refactor/remove methods MoveChannel and MoveProgrammes
[epg] cosmetics: refactor, code formatting etc.
[epg] cleanup: remove unnecessary method CorrectOffset()
[epg] cosmetics: code formatting
[epg] cleanup: remove friend class declaration PVR::CGUIWindowPVRGuide
jsonrpc: expose specialsortseason and specialsortepisode for episodes
dvdplayer input stream: fix incorrectly set of EOF
paplayer: proper handling of non seekable streams
[musicdb] fix incorrect use of ComputeCRC, causing playcounts to not update. Thanks to amet
[cosmetic] get rid of unused variable
[musicdb] joins against album and song artist views should be LEFT, as some songs/albums have no artist. fixes #15149