Defines starting with `r' in bsd/netiso

• REASS_INTERFERE bsd/netiso/clnp.h:367
• REF_FREE bsd/netiso/tp_pcb.h:130
• REF_FROZEN bsd/netiso/tp_pcb.h:127
• REF_OPEN bsd/netiso/tp_pcb.h:128
• REF_OPENING bsd/netiso/tp_pcb.h:129