We use launchpad to translate gettext translation files (PO files).
The PO files are not stored in the repository. They are exported from launchpad and imported to this directory when creating the distribution archive.
Visit launchpad
and follow the link download.
The downloaded file is named as launchpad-export.tar.gz at the time of
this writing. It includes all PO files translated at launchpad. To
import those files, use import-po script in the top directory. It
will inflate the tar.gz file and rename PO files and move them to po
directory and run make update-po.