Uses x11/xfce4 (it's now an official Xfce goodie) and devel/waf MODULES.
Enable history support through sqlite3, disable gio/gvfs for now.
Enable libunique support now that it's finally in-tree and working.
ok phessler@
Based on an original submission from James Turner (james at bsdgroup dot
org), who prodded me to take maintainership, Thanks !
Not linked to the build yet.
ok jdixon@ laurent@ 'import it!' robert@ espie@