r17 now open source

Matt Nourse, May 18 2012

R17 is now licensed under the Apache License v2.0 and is hosted on github.

The code base still contains some idiosyncratic workarounds to avoid GPL licensing issues. For example 64-bit integer division on 32-bit platforms is outsourced to a BSD-licensed library and r17 contains its own tiny subset of the C++ STL. These workarounds are no longer necessary so I plan to remove them over the next several days. I also want to make the build system more distro-friendly.