Re RPM build: yes, you have to make that file with your own API keys if you wish to build RPMs. See file tools/apikeys_dummy.py for inspiration. This is to avoid exposure of my keys at Github (probably that's were Mapquest keys were nicked). Thanks for opening the issue, I will add docs regarding it. Please keep it open.
lconvert -locations relative harbour-pure-maps-[lang-code].po -o harbour-pure-maps-[lang-code].ts lrelease harbour-pure-maps-[lang-code].ts