massive update to incorporate version 3 protocol from Rick Macklem

conversion to queue.h list manipulation (from mycroft)

lint

new queue structure

4.4BSD snapshot (revision 8.1); add 1993 to copyright

update for 4.4BSD from Rick Macklem

uninitialized variable

make kernel includes standard

use new queue routines to manage list of I/O requests; new include syntax

now use modern list management methods

ANSIfy syscall args

AIX interoperability

code to verify zapsock does the right thing

fix from Rick Macklem for multiple free's of NFSD structures

first cut at fixing discconect/reconnect hanging confusion

new namei calling convention

update from Rick Macklem (including leases)

name resolution checking (need kern/kern_malloc.c 7.25.1.1,
kern/vfs_lookup.c 7.31.1.1, kern/vfs_syscalls.c 7.70.1.1,
nfs/nfs_serv.c 7.40.1.1, nfs/nfs_syscalls.c 7.26.1.1,
ufs/ufs_vnops.c 7.64.1.1, a

name resolution checking (need kern/kern_malloc.c 7.25.1.1,
kern/vfs_lookup.c 7.31.1.1, kern/vfs_syscalls.c 7.70.1.1,
nfs/nfs_serv.c 7.40.1.1, nfs/nfs_syscalls.c 7.26.1.1,
ufs/ufs_vnops.c 7.64.1.1, and hp300/hp300/trap.c 7.14.1.1

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use passed in proc pointers

first cut for new proc & user structs (still need to put in new vnode calling
convention): get credentials, etc, via proc; u.u_nd, u.u_spare are gone;
purge user.h; consolidate *nullops()

eliminate u.u_nd

misc fixes plus diskless support from Rick Macklem

first pass at proc reorg

add synamically allocated file descriptors

fixes for compressed NFS (from Macklem)