Revive Debian Installer's Brazilian Portuguese translation

[Rafael Fontenelle <rafaelff@gnome.org>]

Hi all,

I was familiarizing myself with d-i's translation system and I noticed
pt_BR is still in xml format only, pending conversion to po. Reading
the xml-to-po conversion section from doc/translations_po.txt [1], the
first step is to run './scripts/doc-check pt_BR'. I ran it and
everything failed with:

...
failed to find revision for en/bookinfo.xml
failed to find revision for en/preface.xml
failed to find revision for en/partitioning/tree.xml
failed to find revision for en/partitioning/sizing.xml
failed to find revision for en/partitioning/device-names.xml
....

I see these files have no revision number, but a '$Id$'. What should I
do in this case?

Best regards,
Rafael

[1] https://salsa.debian.org/installer-team/installation-guide/-/blob/16f237eb/doc/translations_po.txt