The sout was destroyed before decoders were deleted. This could lead to a
use-after-free of the sout from the DecoderThread.

To fix this issue, we stop all ES, save the stopped state of all ES, change the
renderer/sout configuration and restart all previously stopped ES.

Deprecate ES_OUT_RESTART_ALL_ES since it was only used for this case. And
replace it by ES_OUT_STOP_ALL_ES/ES_OUT_START_ALL_ES, but in private headers.

(cherry picked from commit 72f780a4

)
Signed-off-by: Thomas Guillem <thomas@gllm.fr>