Defines starting with `k' in bsd/kern

• KERN_PROCSLOP bsd/kern/kern_sysctl.c:668
• KMZ_CREATEZONE bsd/kern/kern_malloc.c:102
• KMZ_LOOKUPZONE bsd/kern/kern_malloc.c:103
• KMZ_MALLOC bsd/kern/kern_malloc.c:104
• KMZ_SHAREZONE bsd/kern/kern_malloc.c:105