doc: use a common authors.texi file blurb

Factorize.

doc/authors.texi

+@chapter Authors
+
+The FFmpeg developers.
+
+For details about the authorship, see the Git history of the project
+(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
+@command{git log} in the FFmpeg source directory, or browsing the
+online repository at @url{http://source.ffmpeg.org}.
+
+Maintainers for the specific components are listed in the file
+@file{MAINTAINERS} in the source code tree.

doc/ffmpeg-bitstream-filters.texi

@@ -22,6 +22,8 @@ bitstream level modifications without performing decoding.
 
 @include bitstream_filters.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-bitstream-filters
@@ -31,10 +33,6 @@ bitstream level modifications without performing decoding.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-codecs.texi

@@ -1105,6 +1105,8 @@ Set sample format audio decoders should prefer. Default value is
 @include decoders.texi
 @include encoders.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-codecs
@@ -1114,10 +1116,6 @@ Set sample format audio decoders should prefer. Default value is
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-devices.texi

@@ -39,6 +39,8 @@ for programmatic use.
 @include indevs.texi
 @include outdevs.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-devices
@@ -48,10 +50,6 @@ for programmatic use.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3), libavdevice(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-filters.texi

@@ -19,6 +19,8 @@ libavfilter library.
 
 @include filters.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-filters
@@ -28,10 +30,6 @@ libavfilter library.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavfilter(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-formats.texi

@@ -144,6 +144,8 @@ of -1 enables when required by target format.
 @include demuxers.texi
 @include muxers.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-formats
@@ -153,10 +155,6 @@ of -1 enables when required by target format.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-protocols.texi

@@ -19,6 +19,8 @@ libavformat library.
 
 @include protocols.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-protocols
@@ -28,10 +30,6 @@ libavformat library.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-resampler.texi

@@ -176,6 +176,8 @@ and 16, default value is 9.
 
 @c man end RESAMPLER OPTIONS
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-resampler
@@ -185,8 +187,6 @@ and 16, default value is 9.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswresample(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
+
+@bye

doc/ffmpeg-scaler.texi

@@ -118,6 +118,8 @@ are floating point number values.
 
 @c man end SCALER OPTIONS
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-scaler
@@ -127,10 +129,6 @@ are floating point number values.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswscale(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg-utils.texi

@@ -20,6 +20,8 @@ by the libavutil library.
 @include syntax.texi
 @include eval.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg-utils
@@ -29,10 +31,6 @@ by the libavutil library.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavutil(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/ffmpeg.texi

@@ -1295,6 +1295,8 @@ ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
 @include filters.texi
 @include metadata.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffmpeg
@@ -1304,10 +1306,6 @@ ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
 ffplay(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation
 @c man end
 
-@c man begin AUTHORS
-See git history
-@c man end
-
 @end ignore
 
 @bye

doc/ffplay.texi

@@ -200,6 +200,8 @@ Seek to percentage in file corresponding to fraction of width.
 @include protocols.texi
 @include filters.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffplay
@@ -209,10 +211,6 @@ Seek to percentage in file corresponding to fraction of width.
 ffmpeg(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation
 @c man end
 
-@c man begin AUTHORS
-The FFmpeg developers
-@c man end
-
 @end ignore
 
 @bye

doc/ffprobe.texi

@@ -499,6 +499,8 @@ DV, GXF and AVI timecodes are available in format metadata
 @include protocols.texi
 @include indevs.texi
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffprobe
@@ -508,10 +510,6 @@ DV, GXF and AVI timecodes are available in format metadata
 ffmpeg(1), ffplay(1), ffserver(1) and the FFmpeg HTML documentation
 @c man end
 
-@c man begin AUTHORS
-The FFmpeg developers
-@c man end
-
 @end ignore
 
 @bye

doc/ffserver.texi

@@ -266,6 +266,8 @@ messages to stdout.
 @end table
 @c man end
 
+@include authors.texi
+
 @ignore
 
 @setfilename ffserver
@@ -277,10 +279,6 @@ ffmpeg(1), ffplay(1), ffprobe(1), the @file{ffserver.conf}
 example and the FFmpeg HTML documentation
 @c man end
 
-@c man begin AUTHORS
-The FFmpeg developers
-@c man end
-
 @end ignore
 
 @bye

doc/libavcodec.texi

@@ -20,6 +20,10 @@ The shared architecture provides various services ranging from bit
 stream I/O to DSP optimizations, and makes it suitable for
 implementing robust and fast codecs as well as for experimentation.
 
+@c man end DESCRIPTION
+
+@include authors.texi
+
 @ignore
 
 @setfilename libavcodec
@@ -30,10 +34,6 @@ ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), ffmpeg-codecs(1),
 ffmpeg-bitstream-filters(1), libavutil(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/libavdevice.texi

@@ -19,6 +19,8 @@ VfW, DShow, and ALSA.
 
 @c man end DESCRIPTION
 
+@include authors.texi
+
 @ignore
 
 @setfilename libavdevice
@@ -29,10 +31,6 @@ ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavutil(3),
 libavcodec(3), libavformat(3), ffmpeg-devices(1)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/libavfilter.texi

@@ -17,6 +17,8 @@ framework containing several filters, sources and sinks.
 
 @c man end DESCRIPTION
 
+@include authors.texi
+
 @ignore
 
 @setfilename libavfilter
@@ -26,10 +28,6 @@ framework containing several filters, sources and sinks.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), ffmpeg-filters(1)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/libavformat.texi

@@ -22,6 +22,8 @@ resource.
 
 @c man end DESCRIPTION
 
+@include authors.texi
+
 @ignore
 
 @setfilename libavformat
@@ -31,10 +33,6 @@ resource.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavutil(3), libavcodec(3), ffmpeg-formats(1), ffmpeg-protocols(1)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/libavutil.texi

@@ -20,6 +20,8 @@ enumerations for pixel and sample formats).
 
 @c man end DESCRIPTION
 
+@include authors.texi
+
 @ignore
 
 @setfilename libavutil
@@ -29,10 +31,6 @@ enumerations for pixel and sample formats).
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), ffmpeg-utils(1)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/libswresample.texi

@@ -44,6 +44,8 @@ enabled through dedicated options.
 
 @c man end DESCRIPTION
 
+@include authors.texi
+
 @ignore
 
 @setfilename libswresample
@@ -53,10 +55,6 @@ enabled through dedicated options.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), ffmpeg-resampler(1), libavutil(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye

doc/libswscale.texi

@@ -37,6 +37,8 @@ colorspaces differ.
 
 @c man end DESCRIPTION
 
+@include authors.texi
+
 @ignore
 
 @setfilename libswscale
@@ -46,10 +48,6 @@ colorspaces differ.
 ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), ffmpeg-scaler(1), libavutil(3)
 @c man end
 
-@c man begin AUTHORS
-See Git history (git://source.ffmpeg.org/ffmpeg)
-@c man end
-
 @end ignore
 
 @bye