[patch] gas: Fix assembly listing on Windows.

[Danny Smith]

>
> Kazu Hirata
>
> 2008-10-03  Kazu Hirata  <kazu@codesourcery.com>
>
>        * listing.c (buffer_line): Open the source file with FOPEN_RB.
>        Manually process line ends.
>

This makes sense to me, especially since gcc outputs  assembler files
in binary mode.
Danny