The Google Maps API has changed since the script "gpsd.php" was included in the distribution. Although I am not a PHP developer, trial and error seems to have enable me to update the script to Maps API v3. Note that v3 does not require an API key, for low usage.
I know how to clone git, because I do that for many packages, but have never pushed changes up. Would it be feasible for me to send a "diff -u", either to the list, or ESR, so that you could check, and merge?