The version number is useful to check the libavutil version against which
the library was compiled at run-time, which in turn may be useful to deal
with binary compatibility issues.

Only enable component manual when the corresponding library providing
the feature is enabled.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cus/stable:
  ffplay: increase maximum frame duration to 1 hour for streams without TS discontinuity
  ffplay: fix updating external clock after seeking
  ffplay: disallow seeking before the start of the file
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  vf_fieldorder: require write permissions
  vf_fieldorder: reindent

Conflicts:
	libavfilter/vf_fieldorder.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The commit has already been split and commited, this merge is just for metadata.
What has not been merged is the removial of some start/end_frame / draw_slice
related functions that are still in use. They can be removed once they are
unused.

* commit '565e4993':
  lavfi: merge start_frame/draw_slice/end_frame
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

this is needed for vf_null and a few others.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on patch by Anton Khirnov
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This allows to print the options available when using commands such as
ffmpeg -help full.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'bb6c67bb':
  lavfi: remove vf_slicify

Conflicts:
	doc/filters.texi
	libavfilter/Makefile
	libavfilter/allfilters.c
	libavfilter/vf_slicify.c
	tests/lavfi-regression.sh
	tests/ref/lavfi/crop_scale_vflip
Merged-by: Michael Niedermayer <michaelni@gmx.at>

signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is following 568c70e7.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>