Assumptions
-----------

o Usernames do not contain ",". [julia]
o Version numbers do not contain "~" [logging, charisma, db_access.py, heidi, neve]
o Package names do not contain "~" [rene]
o Suites are case-independent in conf files, but forced lower case in use. [jenna]
o Components are case-sensitive. [jenna]
o There's always source of some sort

o If you have a large archive, you have a lot of memory and don't mind
  it being used. [jenna[, neve]]

[Very incomplete...]