Comment 9 for bug 1052399

I pushed the recent changes to trunk in case any readers are interested in trying.

Check tags strictly:
  gtxml --tags *.po

Dump all tags from msgids into file:
  gtxml --dump-tags *.po > database.txt

Check tags allowing everything from the database:
  gtxml --tags-from database.txt --tags *.po

(it's a bit sketchy that --tags is also required in the last one, I will at the very least change that before release)