Herzog <herzog@online.de>. Specifically,
--verbose/-v flag added
pot_header added to make msgmerge and Emacs po-mode work better
normalize(), escape(), safe_eval(): Improved normalization of strings
for more .po file compatibility (e.g. C style). Handles emmbedded
newlines better.
Also added an identity function called _() and use it in the file
where messages are printed. This allows us to selftest pygettext.py
with itself as input.