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We already check that it is SHA1

Fix #11118

Fix f3334ccb

Fix warning:
initialization discards ‘const’ qualifier from pointer target type
     es_format_t *fmt = &es->fmt;

Introduced in 60044057

This reverts commit 33a939a7.

Fix #11387

Make mplayer timeline display nicer

Was meant as constant pointer and constant pointed data.

If p_chain->first is NULL, we should not take the address of first->filter.

Close #7241

We do not want the fallback on external packages here

Close #11434

(Why noone added this?)

Fixes the problem where UNPACK_DIR returned rtmpdump-2 instead
of rtmpdumo-2.3 for rtmpdump-2.3. Only .tar.* archives have two
filetype suffixes, tgz, zip,.. have only one and the second "."
in the filename belongs to the version number which should not be
stripped.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Although we know in the contrib build system the path to pkg-config,
ffmpeg does not always pick it up and dependency resolution will
fail.
Acked-by: Rémi Denis-Courmont <remi@remlab.net>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

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