The Debian maintainers may well know better, but I observe that the latest upstream diff is dated 2012/10/14, so perhaps it’s worth updating to then? (There were a bunch more changes in 2009 after the version currently packaged in Debian, then just one diff in each of 2010 and 2012.)
* Reuben Thomas <rrt@sc3d.org> [2015-01-12 15:16]: This is just to let you know that mgp is orphaned in Debian, meaning it has no maintainer (see #509644). If you want to see mgp issues addressed, you could volunteer to be the new maintainer.