Add FIXMEs and TODOs.
Drop unused (according to <http://codesearch.debian.net>) snippets docbookxml.mk hbuild.mk kde.mk.
Update autotools (with autoreconf -f -i).
Build-depend on dh-python: needed to test pypy support.
Add myself to Uploaders
Add comment to python-vars.mk referencing why mainflavor should use unversioned executable.