Issue #356: Drop compatibility code for Python 2.4 and 2.5.
Issue #356: Fix code from droping compatibility code for Python 2.4 and 2.5.
Issue #356: Fix remove references to older Python code.
Issue #356: PIL.Image is not suported as 'Image' module in new PILL releases.
Merge pull request #84 from matysek/modulegraph

Drop Python 2.4 and Python 2.5 compatibility.