[Patch] Fix section flags in dlltool

[DJ Delorie]

> Alas no copyright assignment, but the fix is both obvious and taken
> directly from the gas source code in binutils.  Tested on i686-pc-cygwin
> and with LINK.EXE from MSVC 5.0 and 6.0.
> 
> + 2001-03-28  Roger Sayle <roger@metaphorics.com>
> + 
> + 	* dlltool.c (make_one_lib_file): Fix section flags for
> + 	.text, .data and .bss in stub ds*.o files to match those
> + 	generated by gas.
> + 

Looks OK to me if Nick is OK with no assignment.