Is it opensource?: Yes.
Link to package: https://sourceforge.net/projects/meshlab/files/meshlab/MeshLab%20v1.3.3/MeshLabSrc_AllInc_v133.tgz/download
This has sat in accepted for inclusion for over a year. Clearly, there is a lack of demand for the inclusion of this software, nobody has stepped up to provide a patch, maintain it, and properly integrate it. Closing as a result. Feel free to reopen but only when someone offers a patch via our proper patch submission methods and volunteers to be maintainer.