[patch testsuite]: Set bessel_7.f90 for mingw targets to xfail

[Tobias Burnus]

  On 10/18/2010 02:19 PM, Kai Tietz wrote:
> As msvcrt's implementation of bessel-functions have a different
> behavior in corner-cases then glibc's implementation, the test is for
> now better to set to xfail.
>
> 2010-10-18  Kai Tietz
>            * gfortran.dg/bessel_7.f90: Set xfail for mingw targets.

OK.

(If I recall correctly, with MS's BESSEL_YN(n, 0.0) gives NAN rather 
than -INF for x=0.0 and all "n".)

Tobias