Add command-line option to hpcrun for setting the fnbounds server. Use 'hpcrun -fnb hpcfnbounds2' to run with the new server.
Add command-line option to hpcrun for setting the fnbounds server.
Use 'hpcrun -fnb hpcfnbounds2' to run with the new server.

This is more explicit than an environ variable (still allowed).

HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit