[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
FIX: [mediacodec] ART is not happy with non-existent values in map
pvr: fix duplicate EPG IDs if EPG is not stored in database
ff_id3v2_free_extra_meta: set the pointer pointing to extra_meta to NULL

Fixes ticket #3530.

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
FFmpeg: Cherry-pick c94305ae23318c8956a30485cd5642829f4f16a9 to fix #15085
Merge pull request #4583 from fritsch/xbmc-upstream

ffmpeg: Backport c94305ae23318c8956a30485cd5642829f4f16a9 to fix #15085
Merge pull request #4581 from FernetMenta/epg

pvr: fix duplicate EPG IDs if EPG is not stored in database