This updates the Python 2 and 3 versions of each package to share the
same title field. (For packages that only had this change, their
PKG_RELEASE were not incremented.)

This also updates the package title, url and source urls, where
necessary.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

This is a new requirement for the Twisted package.

From the readme:

Incremental is a small library that versions your Python projects.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>