Tests gfortran.dg/chmod_{1,2,3}.f90 fail on cygwin

[David Billinghurst]

Tests gfortran.dg/chmod_{1,2,3}.f90 fail for me on cygwin-1.7 with 
current CVS (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38956)

In each case, the failure is due to the test

   i = chmod (n, "a-w")
   if (i == 0 .and. getuid() /= 0) then
     if (access(n,"w") == 0 .or. access(n,"W") == 0) call abort
   end if

The problem is that users with Administrator rights can always
write to files - similar to root on unix - but it is not easy to test 
for this.

The simple fix is to mark them as XFAIL or UNSUPPORTED under cygwin. 
However, I would prefer to cut out the failing portions of the test - so 
that the existing tests pass under cygwin - and create one (or two) new 
tests for chmod(n,"a-w") that are UNSUPPORTED under cygwin.

Which approach is more appropriate?

	David