v4l2: fix uninitialized value
avcodec: missing error handling (refs #8792)
avcodec: fix end-of-stream handling (fixes #8792) and factor code
avcodec: simplification
macosx: fix resize to old size when finishing from fullscreen mode
do not link macosx interface with AVFoundation

This is not needed, and it breaks execution on 10.6 when binary
is compiled on >= 10.7.
macosx: fix execution on 10.6
macosx: fix start in fullscreen (fixes #8770)
macosx: update todo comment
picture: deduplicate some code
XCB: split picture (X11/XV) and events (all) header

This fixes namespace pollution of picture_sys_t.
Qt: remove duplicate background-color
Qt: style the about dialog scrollbars
Qt: missing white space between the host and build date
Qt: fix layout resizing
dtv: ignore SEC errors

This should fix ISDB-S tuning.
XCB/XVideo: create window directly with correct position and dimensions
avcodec: option name is avcodec-hw
lib: fix wrong user-agent and http-user-agent values at start

VLC main() initializes the values too late for interfaces and playlist.
lib: add libvlc_set_app_id() to complement libvlc_set_user_agent()