allow exact number of SS_MAX_SERVICE

src/lib66/exec/ssexec_init.c

src/lib66/exec/ssexec_reconfigure.c

src/lib66/exec/ssexec_reload.c

src/lib66/exec/ssexec_restart.c

src/lib66/exec/ssexec_signal.c

src/lib66/exec/ssexec_start.c

src/lib66/exec/ssexec_status.c

src/lib66/exec/ssexec_stop.c

src/lib66/exec/ssexec_tree_status.c

src/lib66/parse/parse_service.c

src/lib66/svc/svc_compute_ns.c