typos in the test suite

[François-Xavier Coudert]

> I have found the following typos in the test suite:
>
> gcc/testsuite/gfortran.dg/openmp_stack.f90:! { dg-do run}
> gcc/testsuite/gfortran.dg/recursive_stack.f90:! { dg-do run}

Committed, thanks!

PS: Asher, as one of these is your openmp testcase that fails on
non-openmp targets, it reminded me of something I wanted to tell you:
instead of putting it in libgomp/testsuite, you should really put it
in gfortran.dg/gomp. If this changes regtests fine for you, it is
preapproved.

FX