Translate Toolkit

Problems with pocount --csv were fixed. The
timezone offset was calculated to cater for the
differences bewteen Windows and Linux. oo2po was
fixed, as it caused broken PO files in some cases.
New PO files are ensured to be initialized if new
POT files were introduced. Some updates were made
to quality checks, including introducing some more
test dependencies so that frequently co-occurring
errors should happen less often. Most tools will
now also ignore the _darcs directory when looking
for files. The poglossary script is included.