[patch testsuite]: Deactivate some test in gfortran.dg not supported by w64

[FX]

> 2008-04-30  Kai Tietz  <kai.tietz@onevision.com>
>
>         * gfortran.dg/chmod_1.f90: Disable for x86_64-*-mingw*.
>         * gfortran.dg/chmod_2.f90: Likewise.
>         * gfortran.dg/chmod_3.f90: Likewise.
>         * gfortran.dg/open_errors.f90: Likewise.


I see you've already committed it, but could you please extend it to  
all mingw targets?

FX

-- 
François-Xavier Coudert
http://www.homepages.ucl.ac.uk/~uccafco/