The 2.1 release will be the last version using the original build scripts done by Peter Verhas. As of version 2.2, the Windows version will be built and offered as a Visual Studio 2008 project. The Linux/Unix version will be redone as a configure and make standard build process. Since I don't have a Mac, I'm counting on others to test the build process on that platform.
If you have built VS2008 projects or configure/make scripts and would like to help with the effort, please reply to this post.