pr18425.c: Use effective target vect_long.

pr18425.c: Use effective target vect_long.

        * gcc.dg/vect/pr18425.c: Use effective target vect_long.
        * gcc.dg/vect/vect-13.c, gcc.dg/vect/vect-17.c, gcc.dg/vect/vect-18.c,
        gcc.dg/vect/vect-19.c, gcc.dg/vect/vect-20.c, gcc.dg/vect/vect-48a.c,
        gcc.dg/vect/vect-56a.c, gcc.dg/vect/vect-7.c, gcc.dg/vect/vect-77.c,
        gcc.dg/vect/vect-77a.c, gcc.dg/vect/vect-78.c, gcc.dg/vect/vect-86.c,
        gcc.dg/vect/vect-87.c, gcc.dg/vect/vect-88.c: XFAIL for alpha.

        * gcc.dg/vect/vect.exp: Add check for alpha.
        * lib/target-supports.exp (check_alpha_max_hw_available): New.
        (check_effective_target_vect_int): Enable for alpha.
        (check_effective_target_vect_long): New.
        (is-effective-target): Add it.

From-SVN: r91105