dvdplayer: reevaluate HasVideo/Audio after a stream change
pvr: remove check for different types of channels on SwitchChannel
Fixed - remove early returns in favour of proper setting of bReturn in CGUIInfoManager::GetMultiInfoBool
Merge pull request #2459 from FernetMenta/hasav

dvdplayer: reevaluate HasVideo/Audio after a stream change
Merge pull request #2538 from Fice/music_player_exist

FIX: "musicplayer.exist" could not be negated
upnp: not all internal upnp paths were /'d at the end