Sort image formats table.

Originally committed as revision 14119 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/general.texi

@@ -152,19 +152,19 @@ following image formats are supported:
 
 @multitable @columnfractions .4 .1 .1 .4
 @item Supported Image Format @tab Encoding @tab Decoding @tab Comments
-@item PGM, PPM     @tab X @tab X
+@item animated GIF @tab X @tab X @tab Only uncompressed GIFs are generated.
+@item JPEG         @tab X @tab X @tab Progressive JPEG is not supported.
 @item PAM          @tab X @tab X @tab PAM is a PNM extension with alpha support.
+@item PCX          @tab   @tab X @tab PC Paintbrush
+@item PGM, PPM     @tab X @tab X
 @item PGMYUV       @tab X @tab X @tab PGM with U and V components in YUV 4:2:0
-@item JPEG         @tab X @tab X @tab Progressive JPEG is not supported.
-@item .Y.U.V       @tab X @tab X @tab one raw file per component
-@item animated GIF @tab X @tab X @tab Only uncompressed GIFs are generated.
 @item PNG          @tab X @tab X @tab 2/4 bpp not supported yet
-@item Targa        @tab   @tab X @tab Targa (.TGA) image format
-@item TIFF         @tab X @tab X @tab YUV, JPEG and some extension is not supported yet.
-@item SGI          @tab X @tab X @tab SGI RGB image format
 @item PTX          @tab   @tab X @tab V.Flash PTX format
 @item RAS          @tab   @tab X @tab Sun Rasterfile
-@item PCX          @tab   @tab X @tab PC Paintbrush
+@item SGI          @tab X @tab X @tab SGI RGB image format
+@item TIFF         @tab X @tab X @tab YUV, JPEG and some extension is not supported yet.
+@item Targa        @tab   @tab X @tab Targa (.TGA) image format
+@item .Y.U.V       @tab X @tab X @tab one raw file per component
 @end multitable
 
 @code{X} means that encoding (resp. decoding) is supported.