Updated Gem Spec in Rakefile to work with this newfangled Rubygems. U…
…se 'rake binary gem' instead of e.g. 'rake win32 gem'.
Merged r673:675 to releases/2.2.0
Tagged 2.1.0 release.
Updated rdoc/gem-rdoc file lists.
- releases/1.1.0: Tag code for 1.1.0 release. (OpenGL support)
- make_docs.sh: add new script to build all docs from the source.
Move directories trunk, releases, and branches to base of repository.