urxvt shells don't show up in `who` output.

[Nathan Collins]

When using the urxvt shell, the `who` and `w` commands don't list my shells or add me to the user count. E.g., with two urxvts open:

$ w
 15:57:37 up 18 min, 0 users, load average: 0.52, 0.76, 0.72
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT

Whereas, after opening two gnome-terminals:

$ w
 15:58:33 up 19 min, 2 users, load average: 0.72, 0.76, 0.72
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
collins pts/2 :0 15:58 1.00s 0.30s 0.30s zsh
collins pts/3 :0 15:58 0.00s 0.72s 0.00s w

Similar bugs are reported elsewhere for the Tilda [1] and xterm [2] terminal emulators. The xterm bug report has lots of relevant comments.

[1] https://bugs.launchpad.net/ubuntu/+source/tilda/+bug/982776
[2] https://bugs.archlinux.org/task/19392

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: rxvt-unicode 9.12-1
ProcVersionSignature: Ubuntu 3.0.0-23.39-generic 3.0.36
Uname: Linux 3.0.0-23-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Mon Aug 6 15:54:49 2012
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
SourcePackage: rxvt-unicode
UpgradeStatus: Upgraded to oneiric on 2012-04-12 (115 days ago)

[dino99 (9d9)]

This version is no more supported and is not a 'security' problem; so does not expect a backport