RFA: Support Windows extended error numbers in safe_strerror

[Eli Zaretskii]

> Date: Sat, 4 Feb 2006 09:53:32 -0500
> From: Daniel Jacobowitz <drow@false.org>
> 
> Well, it can't be in win32-nat.c - it's for Windows hosting rather
> than Windows native.  But I could move the code to a new
> Windows-specific file, like ser-windows.o introduced in my other
> patch, and call it there.  I've no objection to that.

ser-windows.c would be good, I think.

Does anyone else object to that?