* Correct binary package dependencies by referencing substvars in
debian/control.
+ * Add dependency on debhelper.
+ * No longer mention SLIP and udptunnel in the userv-ipif Description.
+ * Americanise spelling of /usr/share/common-licences to ...-licenses.
+ * Add debhelper token to postinst scripts.
+ * Change default user for git-daemon to userv-git and
+ default user for dyndns to userv-dyndns.
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