4.7.0

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- Remove deprecated encoding key from desktop file.
- Build ChangeLog from GIT and use XDT 4.7.2.
- Rename "Execute" button to "Launch".
- Port the libxfce4menu code to garcon.
- Use Gtk api for entry icon, if available.
- Port to libxfce4ui and gio.
- Rework the tooltip string code a little.
- Don't use startup notification for now.
- Translation updates (gl, lv, ro, hu, ast, kk, el, ru, sk, sq, ja,
  eu, da, pt, cs, zh_CN, ca, fr, sv, es, pt_BR, nl, fi, it, uk, de, he).