[pvr] EPG hookdata: Return UniqueBroadcastID

Returns epgUid known by client instead unset data.
[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.
fixed context menu 'remove safely' selection
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
Fix memory leakage in python bindings

The python bindings generated by the groovy code generator contain a reference counting bug which results in a memory leak whenever a std::vector is converted to a python list.  The following member functions are affected:

* xbmcvfs.listdir
* xbmc.Player.getAvailableSubtitleStreams
* xbmc.Player.getAvailableAudioStreams
* xbmcgui.Control.getPosition
* xbmcgui.Dialog.browse
* xbmcgui.Dialog.browseMultiple

The reference counting bug occurs because PyList_Append() increments the reference count of the item, so the caller needs to call Py_DECREF() because it no longer owns the object.

This bug is especially problematic when running the Watchdog Service Addon since it may result in frequent calls to xbmcvfs.listdir, and each call can leak many kilobytes of data when listing directories containing many files.
[DVDInputStreamNavigator] allow fallback to root menu call if title menu call fails (like VLC)
[DVDInputStreamNavigator] allow to return from "endless" loop of NOPs
use FF_LEVEL_UNKNOWN by default (prevents some common mismatches in
ParsePacket which triggers reopening of streams)
Do not allow non-content stream types to extend the format context's duration as this
affects the UI and therefore seek capabilities.

DVB subtitle/teletext streams are private streams (stream type 0xBD) and may have their
own timebase or PTS values that are widely different than video stream's,
or not set properly. Regardless of any handling of such cases in FFmpeg, XBMC shouldn't
extend play duration unless an actual content stream has passed it's "end".
correct codec names, MPEG is always written in upper-case
[cosmetic] add missing "l" in some comments
Use NULL from cstddef

This fixes build when GIT_REV is not defined.
FIX: [amc] add omx.exynos to white list
Correctly use JAVA_HOME when generating SWIG bindings

Fix some compilation problems on windows with multiple java install or java not in path but with a correct JAVA_HOME defined
[pvr] change misleading log message

We're playing a recording, the old message made it sound like we're 
beginning to record something