setgroups check int > NGROUPS, so negative would fail; minor cleanup

new copyright notice

RETURN => return, remove syscontext.h

add setuid, seteuid, setgid, setegid per POSIX proposal;
break out geteuid, getegid, getppid; new syscall convention

delete unneeded headers

no longer have per user quota structures

move euids, etc. to proc (for signals); mv logname there (for ps);
s/[gs]etlogname/[gs]etlogin/

setlogname: null terminate name

integrate back branch -r7.1.1.1

merge in vnode changes

use new form of suser()

../machine => machine

add get/set logname system calls

posix style job control - new process groups

4.3BSD release version

lint

use gid_t consistently

maintain p_uid with u.u_uid

Add copyright

eliminate extraneous include of conf.h

add gid_t for groups; copy u.u_groups to int array for copyin/out

Change to includes. no more ../h

4.2 distribution

merge of bill's code plus lint (plus, of course, cleanup of bill's bugs)

add NOGROUP identifier; add groupmember function; tighten group
lookup loop to stop at first NOGROUP entry