New upstream release
    https://launchpad.net/deja-dup/+announcement/8715
    Upstream dropped Ubuntu specific icons per my bug report
    Dropped build requires on control-center-devel.  no longer exists
    Added build requires on itstool and libxml2-python
    Changed build requires from gnome-doc-utils to yelp-tools
    Add versioned requires on duplicity as per offlist mail from upstream
    Validate the primary desktop file
    Drop GConf entirely