vdpau: fix mp4 part2 decoding, activate by default
refactor GUiRenderingControl, clear dependency to viz
expose GUIRenderingControl to addongui lib
AddonGUI: handle OnAction and OnMessage the same way as internal gui - if control of addon acts, message is taken
ButtonTranslator: check GetFallbackWindow on GetAction, unify with Joystick handling
addongui: add window as fallback to button translater
multi-screen: fix compilation on windows
pvr: do not show selection dialog for a single menu hook
X11: use default screen parameters if no output connected