Modify the file format, install separately into share/labels,
and parse it using xmlreader when needed.
Saves time on startup and reduces pointless configurarion size.
Instead of distributing bazillions of localized templates, that
contain only a few translatable strings, we try to localize them
runtime. This is the initial patch that does the heavy-lifting.
It has some rough edges, but the feature will be polished by
freezing of LibreOffice 3.7.
Change-Id: I535b3bff1f5706afebd21d017c01e2b4745b7cfb
