Update the BIND(C, name="foo") test to see if the compiler supports
names longer than 32 characters.

Per discussion on the devel list starting here:
http://www.open-mpi.org/community/lists/devel/2014/01/13799.php we
need a new litmus test to disqualify older Fortran compilers (e.g.,
Pathscale 4.0.12) that *seem* to support all the Right Things, but a)
do not support BIND(C, name="super_long_name") or b) run into an
internal error when compiling our mpi_f08 module.

Testing for b) is sketchy at best.  But OMPI has some BIND(C) names
that are >32 characters, and the same compilers that exhibit b) also
seem to not support BIND(C) names that are >32 characters (i.e., a)).
Hence, the following BIND(C) test checks to ensure that BIND(C,
name="foo") works, where "foo" is actually a name >32 characters.

cmr=v1.7.4:reviewer=rhc:subject=Update Fortran configure test to exclude older pathscale/open64 compilers from mpi_f08