Variables starting with `h' in kern

• h kern/pager.defs:68
• head kern/mach_net.c:288
• high kern/timer.h:152
• high_bits_check kern/timer.c:368
• high_val kern/time_stamp.h:63
• host_priv_self kern/host.h:64
• hz kern/sched_prim.c:91