fixes #8942. Default value for avcodec-hw is none, but NULL was saved, so
hardware decoding got enabled unintentionally.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

This reverts commit 81a1b751.
This reverts commit b74a7b1a.

Thanks funman and thresh for the heads-up

We don't use jpeg-turbo though...

If you don't include basetsd.h, you don't get the right defines
for jmorecfg.h

We just use the libvncclient part though :)

Signed-off-by: Konstantin Pavlov <thresh@videolan.org>

Fixes #7409

This should avoid integer overflows inside the libebml causing heap buffer overflow. Since new called by the lib is limited to SIZE_MAX bytes.

The code failed to clear unmapped channels present in the input.

Since 2.1 there is no way to set a global default volume. Instead it is now
required to set it independently for each audio output.