[pkg] Use setuptools.find_packages() We drop the custom get_packages() function in setup.py that used to look for test files (not discovered automatically since test directories are not packages) and replace it by explicit entries in MANIFEST.in.

addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile