If TAPP doesn't mind I've built maps with his patches included.
Version for root users is installed the same way as that from this thread, except *.prop editing which is not necessary now.
Version for non-root users is just installed - without any hacking :)
Of course you could install non-root version in root environment as well, but then you will have doubled maps app in your system. Non-rooters must have it doubled.
Thanks a lot, TAPP! :)