Hi André,
inspired by "Linux Kernel Development: How Fast it is Going, Who is Doing It, What They are Doing, and Who is Sponsoring It: An August 2009 Update" (http://www.linuxfoundation.org/publications/whowriteslinux.pdf), i thought we might do a similar analyse of the wine tree.
The presentation looks very similar to the details Alexandre gives as part of his presentation every year at WineConf. --Juan