on sizeof(long) on i386. The ctypes module builtin to Python-2.5
appears to work, so don't depend on devel/py-ctypes but require
Python-2.5.
Being here, update to 3.0.1b1. There is no useful changelog - appearently
more new OpenGL features are supported.
- assume that Python 2.4 and 2.5 are compatible and allow checking for
fallout.
- remove PYTHON_VERSIONS_COMPATIBLE that are obsoleted by the 2.3+
default. Modify the others to deal with the removals.