FYI http://www.google-melange.com/gsoc/proposal/review/google/gsoc2012/dolsh/20002#
Maybe helpful for your GSOC project: as part of a larger code base, we have implemented many standard Unicode algorithms (normalization; casefolding; graphemes; info like general category, Bidi class, joining type, etc.; ...).
The doc and source can be found at http://stephan.bitbucket.org/. As this was just a helper, it is not fully polished (but it works and is reasonably fast).
