[RFA] testsuite/gdb.base/fullname.exp fix

[Eli Zaretskii]

> From: Pedro Alves <pedro@codesourcery.com>
> Date: Sun, 21 Jun 2009 02:27:47 +0100
> Cc: "Pierre Muller" <muller@ics.u-strasbg.fr>
> 
> (I think Cygwin has now some magic to be able
> to remove open files?  Maybe I'm dreaming.)

You can do that on Windows (only with NTFS, IIRC), but only if you use
CreateFile with the right flags to open the file.  Guess what the MS
runtime does in its emulation of `open', `fopen' and friends.