Win32: really fix poll() loop *cough* *cough*
Contrib: use a new DVDnav fork

Should close #8125
rename configuration page title for x264 options

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>
Contribs: update dvdread to a new fork
Remove aout_Packet from directsound audio output
dbus: Add memory allocation failure check