- Rebase and re-enable
gnome-control-center-allow-extra-tools-in-shell.patch.

- Disable gnome-control-center-allow-extra-tools-in-shell.patch:
Needs rebase.
- Conditionally apply translations-update-upstream BuildRequires
and macro for non-openSUSE only.

- Drop gnome-control-center-hide-firewall-zone-entry.patch: no
longer needed, since upstream code now checks if firewalld is
running and hides the widgets dynamically.

------------------------------------------------------------------
- Drop long disabled and no longer needed patches:
+ gnome-control-center-system-proxy-configuration.patch.
+ gcc-private-connection.patch.

- Update to version 3.21.90:
+ Fix truncated panel names for larger fonts.
+ Port to libnm 1.2.
+ Display:
- Add option to enable and disable overscan compensation when
supported by the driver.
- Ensure only one output is set as primary.
- Separate interlaced from normal modes.
+ Info:
- Fetch renderer information from gnome-session.
- Show OS build-id.
+ Keyboard: Update to a new design.
+ Mouse: