.profile is read twice if byobu-launcher-install is used

[Scott Moser]

if the user sets byobu to run via byobu-launcher-install, then their .profile will be sourced twice.

I'd suggest in byobu-launcher-install to have:
install_launcher() {
    printf "BYOBU_SOURCED_PROFILE=1 ; . \$(which byobu-launch)\n" >> "$1"
}

Also, not a terribly big deal, but I do not think you need the 'which' statement at all.
instead, just:

BYOBU_SOURCED_PROFILE=1 ; . byobu-launch

Note, i notice this because I run keychain from .profile, and i can see it run twice on login.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: byobu 4.17-0ubuntu1
ProcVersionSignature: Ubuntu 3.0-2.3-generic 3.0.0-rc4
Uname: Linux 3.0-2-generic x86_64
Architecture: amd64
Date: Tue Jul 12 15:25:37 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: byobu
UpgradeStatus: Upgraded to oneiric on 2010-11-15 (238 days ago)

[Launchpad Janitor (janitor)]

This bug was fixed in the package byobu - 4.18-0ubuntu1

---------------
byobu (4.18-0ubuntu1) oneiric; urgency=low

  [ Dustin Kirkland ]
  * usr/bin/byobu, usr/bin/byobu-status:
    - remove some redundancies
  * usr/bin/byobu, usr/bin/byobu-config, usr/bin/byobu-ctrl-a,
    usr/bin/byobu-disable, usr/bin/byobu-launcher, usr/bin/byobu-quiet,
    usr/bin/byobu-reconnect-sockets, usr/bin/byobu-select-profile,
    usr/bin/byobu-select-session, usr/lib/byobu/.constants:
    - use a BYOBU_BACKEND environment variable, to support both screen
      and tmux
  * etc/byobu/socketdir, usr/bin/byobu, usr/lib/byobu/date,
    usr/lib/byobu/notify_osd, usr/share/byobu/keybindings/f-keys,
    usr/share/byobu/keybindings/screen-escape-keys,
    usr/share/byobu/profiles/common, usr/share/byobu/profiles/NONE,
    usr/share/byobu/profiles/tmux, usr/share/byobu/windows/common:
    - use a BYOBU_BACKEND environment variable, to support both screen
      and tmux
  * usr/lib/byobu/.common, usr/lib/byobu/.constants:
    - ensure that libraries only get included once
  * === removed directory usr/sbin, usr/sbin/byobu-classroom =>
    experimental/byobu-classroom:
    - move the classroom to experimental (about to be an ensemble formula)
  * etc/byobu/backend, usr/lib/byobu/.constants:
    - add support for storing byobu backend configuration (screen|tmux)
  * debian/control: start suggesting tmux
  * usr/bin/byobu, usr/lib/byobu/.constants:
    - support tmux -V version
  * usr/lib/byobu/.shutil:
    - update ec2 detection method
  * === added directory usr/share/byobu/status, configure.ac,
    etc/byobu/statusrc, experimental/byobu-status-all => usr/bin/byobu-
    statusd, Makefile.am, usr/bin/byobu-janitor, usr/bin/byobu-status-
    print, usr/bin/Makefile.am, usr/lib/byobu/color,
    usr/lib/byobu/.constants, usr/lib/byobu/Makefile.am,
    usr/lib/byobu/.shutil, usr/share/byobu/profiles/common,
    usr/share/byobu/status/1, usr/share/byobu/status/2,
    usr/share/byobu/status/3, usr/share/byobu/status/4,
    usr/share/byobu/status/Makefile.am:
    - add shared configurations for status ordering
    - install symlinks to status ordering
    - add status script for status colors
    - move color function to shared utils
    - add stub for tmux color support
    - add byobu-statusd, daemon to cache and update status information in the
      run directory as the information expires
    - add byobu-status-print, script to concatenate status per ordered
      configuration
    - move byobu backend support below BYOBU_CONFIG_DIR determination
    - move status frequencies to a shared utility function
    - drop the backtick commands for all the individual status functions
    - add the backtick commands for the 4 quadrants of status
    - update the hardstatus line accordingly
  * usr/bin/byobu-select-session, usr/lib/byobu/.common,
    usr/lib/byobu/.constants, usr/lib/byobu/.dirs,
    usr/lib/byobu/Makefile.am, usr/share/byobu/profiles/common,
    usr/share/byobu/status/1, usr/share/byobu/status/2:
    - fix string bug in select session
    - re-add a couple of necessary backticks
    - update caption line to use new statusd cache
    - significantly reduce the numb...