intel gas and `--32'

[Philip Blundell]

Passing the `--32' option to an i386 non-ELF gas (i386-cygwin, say) causes it 
to silently call exit(1).  The problem is that md_longopts mentions this flag, 
but md_parse_option doesn't do anything about it.

It's not quite clear to me whether the thing to do for non-ELF targets is to 
turn the option off altogether, or try to make it work.  Any i386 hackers want 
to take a look?

p.