This feature is mostly only used by NLE software, and is
both of dubious value being enabled by default, and a
possible security risk.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 712d962a)

Conflicts:

	libavformat/isom.h
	libavformat/mov.c
	libavformat/version.h
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>