Log Message:
Update ruby-opengl to version 0.60.0.  Changes from version 0.32g
include:

    + Install as a Ruby gem.

    * Support for Ruby 1.9.0+ (requires mkrf 0.2.3)
    * Added support for many more OpenGL extensions
    * GLU and GLUT cleanup, bugfixes, some missing functions added -
      version 3.7 of GLUT API is now requirement (previously 3.0)
    * Support for OpenGL 2.1 (that includes pixelpack/unpack buffer)
    * Lots of bugfixes.