Macros starting with `x' in bsd4-4

• X25CSBITS netccitt/pk_var.h:199
• X25GBITS netccitt/pk_var.h:197
• X25SBITS netccitt/pk_var.h:198
• xchg netinet/tcp_subr.c:172
• XIFA netccitt/pk_llcsubr.c:122
• XSENSE_ADDL dev/scsi/scsi.h:202
• XSENSE_EOM dev/scsi/scsi.h:196
• XSENSE_FM dev/scsi/scsi.h:195
• XSENSE_ILI dev/scsi/scsi.h:197
• XSENSE_INFO dev/scsi/scsi.h:199
• XSENSE_ISSTD dev/scsi/scsi.h:191
• XSENSE_IVALID dev/scsi/scsi.h:193
• XSENSE_KEY dev/scsi/scsi.h:198
• XSENSE_SEG dev/scsi/scsi.h:194
• XTRACTPKP netccitt/pk_llcsubr.c:113