doc: cosmetics, rename fftools-common-opts to avtools-....

doc/avconv.texi

@@ -82,7 +82,7 @@ described.
 @chapter Options
 @c man begin OPTIONS
 
-@include fftools-common-opts.texi
+@include avtools-common-opts.texi
 
 @section Main options
 

doc/avplay.texi

@@ -28,7 +28,7 @@ various Libav APIs.
 @chapter Options
 @c man begin OPTIONS
 
-@include fftools-common-opts.texi
+@include avtools-common-opts.texi
 
 @section Main options
 

doc/avprobe.texi

@@ -60,7 +60,7 @@ are prefixed by the string "TAG:".
 @chapter Options
 @c man begin OPTIONS
 
-@include fftools-common-opts.texi
+@include avtools-common-opts.texi
 
 @section Main options
 

doc/avserver.texi

@@ -240,7 +240,7 @@ For example:   @samp{http://localhost:8080/test.asf?date=2002-07-26T23:05:00}.
 @chapter Options
 @c man begin OPTIONS
 
-@include fftools-common-opts.texi
+@include avtools-common-opts.texi
 
 @section Main options
 

doc/fftools-common-opts.texi → doc/avtools-common-opts.texi

@@ -13,7 +13,7 @@ commandline will set to false the boolean option with name "foo".
 
 @section Generic options
 
-These options are shared amongst the ff* tools.
+These options are shared amongst the av* tools.
 
 @table @option
 

doc/ffmpeg.texi

@@ -68,7 +68,7 @@ specified for the inputs.
 @chapter Options
 @c man begin OPTIONS
 
-@include fftools-common-opts.texi
+@include avtools-common-opts.texi
 
 @section Main options