DXVA: add HD4xxx to ati work-around, only capable of opening a single decoder at a given time
Merge pull request #5971 from FernetMenta/hd4000

DXVA: add HD4xxx to ati work-around, only capable of opening a single de...
vdpau: advanced settings for auto deinterlacing
ActiveAE: slightly reduce buffer size
pthreads: use mutex protocol PTHREAD_PRIO_INHERIT
vaapi: lock gfx context on pre-cleanup
Bump xbmc-pvr-addons ref