project_hold
t->t_proj = project_hold(proj0p);
(void) project_hold(proj0p);
(void) project_hold(ct->ct_proj);
(void) project_hold(perm->ipc_proj);
(void) project_hold(newkpj);
(void) project_hold(kpj);
t->t_proj = project_hold(pp->p_task->tk_proj);
kproject_t *project_hold(kproject_t *);