Support current LANG environment variable if any.
Support current LANG environment variable if any.

Signed-off-by: Laurent Vallar <39f69c278f46165447f30d10acf54277aaa3d5fc@zbla.net>

fgrehm/vagrant-lxc,spheresh/vagrant-lxc,danielhodder/vagrant-lxc,fgrehm/vagrant-lxc,globin/vagrant-lxc,mayflower/vagrant-lxc,necrose99/vagrant-lxc,kevinlowrie/vagrant-lxc,fgrehm/vagrant-lxc,necrose99/vagrant-lxc,danielhodder/vagrant-lxc,ccope/vagrant-lxc,globin/vagrant-lxc,kevinlowrie/vagrant-lxc,Val/vagrant-lxc,spheresh/vagrant-lxc,spheresh/vagrant-lxc,mayflower/vagrant-lxc,mayflower/vagrant-lxc,kevinlowrie/vagrant-lxc,necrose99/vagrant-lxc,Val/vagrant-lxc,Val/vagrant-lxc,ccope/vagrant-lxc,danielhodder/vagrant-lxc,globin/vagrant-lxc,ccope/vagrant-lxc