[initial import, Judy.Private, BitSet and a small test program
John Meacham <john@repetae.net>**20060407030828] 
[split out Freeze into its own module, add pure conversions from BitSets to lists
John Meacham <john@repetae.net>**20060407050629] 
[lots of changes
John Meacham <john@repetae.net>**20060419002536]