Note: This blog entry will to go away soon. Another version is in the works.
Note also that having the entire files rather than just a code snippet like a patch makes it easy see as much context as you need in order to recreate a change log by looking at ONLY the files that were changed from one build to another.
KDE's 'kompare' is an excellent utility for viewing changes.
So for now, since this is a little buggy (not serious but needs tweeking), consider...