If something depended on this behaviour, it should really be fixed...

Now, we still need to remove the vlc/vlc.h hack.

The signal thread may catch a signal before the interface thread is
initialized. We need to check signum before the first wait.

Also fix a minor timing problem in the screensaver plugin.

It was a misdesign to have it return b_die, due to the race condition
mentioned earlier.

We need to check vlc_object_alive() anyway, due to the intrinsic race
condition whereby the thread is killed before it's got the chance to
lock its object and call vlc_object_wait().

There is no point in unlocking and locking again immediatly.
Not only will this typically fail to yield the CPU to another would-be
waiting thread, but vlc_object_wait() will unlock&lock anyway.

all formats where the pixel pitch is of 1 byte on every plane).

but packed should be easy to implement.

planar YUV).

mozilla: Use --ignore-config, we don't want local VLC to interfer with the plugin. Also support exception.

vlckit: Make sure it compiles, by switching to autotools. This will allow the framework to be a bit more stable, as autotools is still our main buildsystem, and modifications to it break cmake often.