Macros starting with `k' in BSD4-4

• KGDB_CMD i386/i386/kgdb_proto.h:60
• KILL_TIMER netccitt/hd_var.h:71
• kmemxtob sys/malloc.h:252
• KTROP sys/ktrace.h:42
• KTRPOINT sys/ktrace.h:63
• kvtopte i386/include/pmap.h:157