Defines starting with `x' in BSD4-4

• X i386/conf/Makefile.i386:71
• X25_1976 netccitt/x25.h:138
• X25_1980 netccitt/x25.h:139
• X25_1984 netccitt/x25.h:140
• X25ACCTF netccitt/x25acct.h:47
• X25_BASIC netccitt/x25.h:142
• X25_CALL netccitt/pk.h:49
• X25_CALL_ACCEPTED netccitt/pk.h:50
• X25_CLEAR netccitt/pk.h:51
• X25_CLEAR_CONFIRM netccitt/pk.h:52
• X25_DATA netccitt/pk.h:53
• X25_DBIT netccitt/x25.h:103
• X25_DDN netccitt/x25.h:141
• X25_DG_CIRCUIT netccitt/x25.h:106
• X25_DG_ROUTING netccitt/x25.h:107
• X25_DIAGNOSTIC netccitt/pk.h:62
• X25_FACIL_LEN_MAX netiso/cons_pcb.h:76
• X25_INTERRUPT netccitt/pk.h:54
• X25_INTERRUPT_CONFIRM netccitt/pk.h:55
• X25_MBS_HOLD netccitt/x25.h:108
• X25_MQBIT netccitt/x25.h:104
• X25_OLDSOCKADDR netccitt/x25.h:105
• X25_PARTIAL_PKT_LEN_MAX netiso/cons_pcb.h:77
• X25_PORT_RESERVED netiso/cons_pcb.h:74
• X25_PORT_USERMAX netiso/cons_pcb.h:75
• X25_PS128 netccitt/x25.h:110
• X25_PS256 netccitt/x25.h:111
• X25_PS512 netccitt/x25.h:112
• X25_REJECT netccitt/pk.h:59
• X25_RESET netccitt/pk.h:60
• X25_RESET_CONFIRM netccitt/pk.h:61
• X25_RESTART netccitt/pk.h:64
• X25_RESTART_CONFIRM netccitt/pk.h:65
• X25_RESTART_DTE_ORIGINATED netccitt/pk.h:69
• X25_RESTART_DTE_ORIGINATED2 netccitt/pk.h:73
• X25_RESTART_LOCAL_PROCEDURE_ERROR netccitt/pk.h:70
• X25_RESTART_NETWORK_CONGESTION netccitt/pk.h:71
• X25_RESTART_NETWORK_OPERATIONAL netccitt/pk.h:72
• X25_REVERSE_CHARGE netccitt/x25.h:102
• X25_RNR netccitt/pk.h:58
• X25_RR netccitt/pk.h:57
• X25_SBSIZE netiso/cons_pcb.h:73
• X25_TTL netiso/cons_pcb.h:80
• XAK_TPDU netiso/tp_events.h:66
• XAK_TPDU_type netiso/tp_param.h:174
• _XEBEC_PG netiso/tp_driver.c:6
• XMSG_MDP dev/scsi/scsi.h:335
• XMSG_SDTR dev/scsi/scsi.h:336
• XMSG_XID dev/scsi/scsi.h:337
• X_NOCHANNEL netiso/cons_pcb.h:148
• X_OK sys/unistd.h:63
• XPD_TPDU netiso/tp_events.h:63
• XPD_TPDU_type netiso/tp_param.h:173
• XPKT_DATA netiso/cons_pcb.h:119
• XPKT_FLOWCONTROL netiso/cons_pcb.h:121
• XPKT_INTERRUPT netiso/cons_pcb.h:120
• XS_HIPRIO netccitt/x25.h:83
• XS_REVERSE_CHARGE netccitt/x25.h:82
• XTABS sys/ioctl_compat.h:112
• XTALSPEED i386/isa/clock.c:81