[patch, libgfortran] PR30005 Open errors (not/already exists etc.): show also the file name

[FX Coudert]

> 2006-12-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
>
> 	PR libfortran/30005
> 	* io/open.c: Add errno.h include.
> 	(new_unit): Add new error messages with file name for file open.

Looks OK to me.

Thanks Jerry,
FX