Hi,
I just added a new category for the GSC09, Organisation and Categorisation of Pd-Extended Externals. This follows up recent discussions on the pd-dev list. It might not be eligible due to being more about restructuring already existing code than to make new code (which could be seen as "documentation"). But if doesn't go on, at least there was some effort to sketch the problem.
The page is at http://puredata.info/dev/summer-of-code/OrganisationAndCategorisationOfPdExt....
About mentoring: neither me nor Enrique are up for the task of reorganising svn, as we don't know enough about what goes on below the user level of Pd - so we can't do much more than say "this or this would be nice". So our names are there due to interest in the project, but someone else should take care of the practical part of working the compilation material. If you think this person could be you, just put your name in.
Best,
João Pais