DVDVideoCodecFFmpeg: Do not set AVCodecContext.dsp_mask.

Setting it to 0 is useless since it is the default (meaning autodetection) and this variable is deprecated.
Fix format string which causes compilation error when --enable-dvdcss is set on Ubuntu
Merge pull request #2123 from aballier/no_dsp_mask

DVDVideoCodecFFmpeg: Do not set AVCodecContext.dsp_mask.
Merge pull request #2125 from hrodenburg/fix-format-string

Fix format string which causes compilation error when --enable-dvdcss is...
[language] add reference in what files current string ids are used
fixed: Cosmetics
[addons] sync scrapers to repo
removed internal liblame as all ports using external libs.
Merge pull request #2126 from MartijnKaijser/strings_locations

[language] add reference in what files current string ids are used
configure: add --enable-pvraddons-with-dependencies switch
for intree building of PVR Addons
VideoRenerers: add buffering
linuxrenderer: delete all textures on reconfigure
drop frame counter in application, ask render manager instead
videoplayer: adopt lateness detection and dropping to buffering
videoplayer: update frametime, it might change due to fps detection
videoplayer: give streams with invalid fps a chance for fps detection
dvdplayer: allow rewinding at end of stream, do a seek after rewind
video player: present correct pts to user for a/v sync (after buffering in renderer)
vaapi: adopt to buffering in renderer
vdpau: redesign