Patch for bind CVE-2013-4854.
Ticket #1871
Pull up following revision(s) (requested by christos in ticket #1868):
	usr.bin/netstat/main.c: revision 1.86
	usr.bin/netstat/netstat.h: revision 1.47
	usr.bin/netstat/inet.c: revision 1.102
	usr.bin/netstat/inet.c: revision 1.103
	usr.bin/netstat/inet6.c: revision 1.61
	usr.bin/netstat/inet6.c: revision 1.62
Don't use -P as a kmem printer, verify that the address points to a pcb first!
Not all pointers are 64bit - use uintptr_t instead of uint64_t.
Ticket 1868.