- Update to 2.21.1
    - Remove redundant requirements.
    - Bump EDS requirement to 2.21.1.
    - Bump gtkhtml requirement to 3.17.1.
    - Backup/restore plugin got moved from standard to experimental.
    - Revert the per-component menu items (RH bug #222105, #241462, #293771).
    - Show the switcher buttons by default (RH bug #186403).
    - Alter the desktop file Name and Comment.
    - Disable patch for GNOME bug #376991 for now. It may be contributing to
        password prompting problems as described in RH bug #296671.
    - Remove patch for GNOME bug #417999 (fixed upstream).
    - Remove patch for GNOME bug #476040 (fixed upstream).
    - Remove patch for GNOME bug #477045 (fixed upstream).