vlc_threads.h: now that vlc_object_t is optional for mutexes, make sure that we deal with it properly

Print messages directly to standard error if we don't have an object much like when malloc fails, though this time with UTF-8 support.

vlc_threads: provide proper implementation of vlc_spinlock or WIN32 (Windows 2000 required), avoid runtime assert

use intf_UserFatal when an error occurs while verifying the binary

update: put pgp key in its own header (and update the key to 2008), put a FIXME for some bug discovered (some signatures are smaller than 65 bytes), be more verbose when a problem happens.

Use big endian definitions for ffmpeg PIX_FMT_* when running on big endian machines. Eg: PIX_FMT_RGB24 should become PIX_FMT_BGR24.

set volume-change variable also in volumeUp/volumeDown, because it seemed that when you change volume with that, it wasn't setted

better now, thanks for j-b for spotting.

The Windows only code doesn't exist yet, but soon ?