Macros starting with `b' in bsd/netat

• BAD_REMADDR bsd/netat/asp_proto.c:74
• BETWEEN bsd/netat/adsp_internal.h:95
• BRT_HASH bsd/netat/at_ddp_brt.h:55
• BRT_LOOK bsd/netat/at_ddp_brt.h:57
• BYTE_AT bsd/netat/adsp_internal.h:45