fix test failures on python2.4 and 2.5 - they dont support named tuples.
fix test failures on python2.4 and 2.5 - they dont support named tuples.

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extra : convert_revision : schettino72%40gmail.com-20091002122211-4wkc2svnl18h0kjn

saimn/doit,gh0std4ncer/doit,wangpanjun/doit,lelit/doit,lelit/doit,pydoit/doit,Hinidu/doit,lelit/doit,lelit/doit,JohannesBuchner/doit