Correct way to handle transient files in /var

[David Brownlee <abs%absd.org@localhost>]

        What is the correct way to handle files in /var which can be
        removed when a package is uninstalled?

        for example policykit seems to require:

            root:polkit   /var/lib/PolicyKit
            polkit:wheel  /var/lib/PolicyKit-public
            polkit:polkit /var/lib/misc/PolicyKit.reload

        Without these it chokes when hal tries to use it (and hald
        will not run).

        On uninstall it would probably be reasonable to remove them.

        So, just handcode in INSTALL and DEINSTALL?