gem/nhlib — pull request #35 by larsbutler (2012-05-21 14:50:38+00:00)
Title: Polygon enhancements

Required for: https://bugs.launchpad.net/openquake/+bug/987827

In particular, we need the containment functionality, along with all of the other important parts of a 'correct' implementation of polygon geometry (spherical coords, geodetic distance, etc.).