VAAPI: Don't return false when vlVaQueryDisplayAttributes returns empty
VAAPI: Report failure when VPP is not usable
VAAPI: Log the function of the CheckSuccess that failed
Merge pull request #5909 from fritsch/vaapi-attributes

VAAPI: Don't return false when vlVaQueryDisplayAttributes returns empty
dvdplayer: observe pts counter overflow
vdpau: advanced settings for auto deinterlacing
ActiveAE: slightly reduce buffer size
ActiveAE: add some debug logging
pthreads: use mutex protocol PTHREAD_PRIO_INHERIT
vaapi: lock gfx context on pre-cleanup
Bump xbmc-pvr-addons ref