byobu does not show ip address on status in ja_JP locale

In ja_JP locale and on Lucid, byobu does not show ip address on status.

Because ifconfig output is translated in ja_JP locale, byobu cannot parse the output.

On Maverick or higher releases, byobu uses /sbin/ip which is not currently translated instead of ifconfig and sets LC_ALL variable when calling /sbin/ip, So those releases not affected.

==========
$ locale
LANG=ja_JP.UTF-8
LC_CTYPE="ja_JP.UTF-8"
LC_NUMERIC="ja_JP.UTF-8"
LC_TIME="ja_JP.UTF-8"
LC_COLLATE="ja_JP.UTF-8"
LC_MONETARY="ja_JP.UTF-8"
LC_MESSAGES="ja_JP.UTF-8"
LC_PAPER="ja_JP.UTF-8"
LC_NAME="ja_JP.UTF-8"
LC_ADDRESS="ja_JP.UTF-8"
LC_TELEPHONE="ja_JP.UTF-8"
LC_MEASUREMENT="ja_JP.UTF-8"
LC_IDENTIFICATION="ja_JP.UTF-8"
LC_ALL=
==========

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: byobu 2.68-0ubuntu1.1
ProcVersionSignature: Ubuntu 2.6.32-33.72-server 2.6.32.41+drm33.18
Uname: Linux 2.6.32-33-server x86_64
Architecture: amd64
Date: Sat Sep 17 08:22:33 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu-Server 10.04.3 LTS "Lucid Lynx" - Release amd64 (20110719.2)
PackageArchitecture: all
ProcEnviron:
 LANG=ja_JP.UTF-8
 SHELL=/bin/bash
ScreenRC:

SourcePackage: byobu