should allow nesting without changing TERM

[Scott Moser]

$ byobu
ERROR: Sessions should be nested with care. Remove 'screen' from $TERM to force.
$ echo $TERM
screen

I'm fully aware that I'm running screen, and would like to do the crazy thing of nesting it.
I would not, however, like to change my TERM variable (which will break things) in order to accomplish this.

I suggest this the attached patch as a sane way to fix this.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: byobu 5.60-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Fri Oct 18 14:52:34 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-10-19 (730 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: byobu
UpgradeStatus: Upgraded to saucy on 2013-05-20 (151 days ago)

[Launchpad Janitor (janitor)]

This bug was fixed in the package byobu - 5.62-0ubuntu1

---------------
byobu (5.62-0ubuntu1) trusty; urgency=low

  * usr/share/byobu/keybindings/f-keys.tmux:
    - as it turns out, showing the current window name when renaming
      is really annoying
  * usr/bin/byobu-janitor, usr/lib/byobu/menu,
    usr/share/byobu/profiles/screenrc: LP: #1244509
    - customizations of screen configuration should go in
      $BYOBU_CONFIG_DIR/.screenrc, which will be sourced last; rather than
      ~/.screenrc (which should be reserved for screen-without-byobu)
  * usr/bin/byobu-reconnect-sockets, usr/bin/byobu-select-session:
    - LP: #1243017
    - add a few environment variables to restore, including upstart
      to ensure upstart commands resume working in a session restart
  * README, usr/bin/byobu-config, usr/bin/byobu-select-session,
    usr/lib/byobu/include/ec2instancespricing.py:
    - LP: #996559, LP: #988471, LP: #1237071
    - Okay, this is the last time I'm going back and forth on this;
      for real ;-)
    - In our 3 python scripts, we are going to use #!/usr/bin/python
      + The vast majority of Byobu users are getting it from their
        distro, and the package itself appropriately depends on python
    - Advanced users, developers, and others who want to run a different
      python in their environment will need to sed update three scripts
    - I've left a hint in the README to that effect
 -- Dustin Kirkland <email address hidden> Fri, 18 Oct 2013 16:29:56 -0500