Reorder platform sections alphabetically.

Originally committed as revision 22687 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/general.texi

@@ -715,6 +715,10 @@ performance on systems without hardware floating point support).
 
 @chapter Platform Specific information
 
+@section BeOS
+
+BeOS support is broken in mysterious ways.
+
 @section BSD
 
 BSD make will not build FFmpeg, you need to install and use GNU Make
@@ -728,6 +732,11 @@ around the problem. This may have unexpected sideeffects, so use it at
 your own risk. If you care about FreeBSD, please make an attempt at
 getting the system headers fixed.
 
+@section OS/2
+
+For information about compiling FFmpeg on OS/2 see
+@url{http://www.edm2.com/index.php/FFmpeg}.
+
 @section Windows
 
 To get help and instructions for building FFmpeg under Windows, check out
@@ -1004,13 +1013,4 @@ and for a build with shared libraries
 ./configure --target-os=mingw32 --enable-memalign-hack --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
 @end example
 
-@section BeOS
-
-BeOS support is broken in mysterious ways.
-
-@section OS/2
-
-For information about compiling FFmpeg on OS/2 see
-@url{http://www.edm2.com/index.php/FFmpeg}.
-
 @bye