* lib/fortran-torture.exp (fortran-torture-execute): Honor
        additional_flags set by alternate driver.
        (ieee-options): New procedure.
        * gfortran.fortran-torture/execute/intrinsic_fraction_exponent.x: New.
        * gfortran.fortran-torture/execute/intrinsic_nearest.x: New.
        * gfortran.fortran-torture/execute/intrinsic_set_exponent.x: New.
        * gfortran.fortran-torture/execute/nan_inf_fmt.x: New.

From-SVN: r86761