overview of localization

[Caolán McNamara]

For testing purposes, I want to update my local translations/lang/foo.po
files with freshly added strings from a new file type, i.e. .ui files.

I see that "localize" is used to exact the English source strings
from .src, .ulf etc and I think I have it doing what I want to exact
localizables from .ui files now. What do I use to update the
translations po files from that ?

C.