Added /etc/group and /etc/passwd files.

verbatim/etc/group

@@ -0,0 +1,18 @@
+wheel:*:0:root
+daemon:*:1:daemon
+kmem:*:2:root
+sys:*:3:root
+tty:*:4:root
+operator:*:5:root
+bin:*:7:
+news:*:8:
+man:*:9:
+games:*:13:
+staff:*:20:root
+guest:*:31:root
+uucp:*:66:
+xten:*:67:xten
+dialer:*:68:
+users:*:100:
+nogroup:*:65533:
+nobody:*:65534:

verbatim/etc/passwd

@@ -0,0 +1,12 @@
+root::0:0:Charlie &:/root:/bin/csh
+toor:*:0:0:Bourne-again Superuser:/root:
+daemon:*:1:31:Owner of many system processes:/root:
+operator:*:2:20:System &:/usr/guest/operator:/bin/csh
+bin:*:3:7:Binaries Commands and Source,,,:/:/nonexistent
+games:*:7:13:Games pseudo-user:/usr/games:
+news:*:8:8:News Subsystem:/:/nonexistent
+man:*:9:9:Mister Man Pages:/usr/share/man:
+uucp:*:66:66:UUCP pseudo-user:/var/spool/uucppublic:/usr/libexec/uucp/uucico
+xten:*:67:67:X-10 daemon:/usr/local/xten:/nonexistent
+new::100:100:New User Program (verification):/usr/sbin:/usr/sbin/newuserv
+nobody:*:65534:65534:Unprivileged user:/nonexistent:/nonexistent