* gnu/packages/patches/gnome-control-center-libexecdir.patch: Add patch.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/gnome.scm (gnome-control-center): Update to 41.2.
[source]: Apply patch.
[phases]{no-polkit-magic}: New phase.
[native-inputs]: Use new style. Add python.
[propagated-inputs]: Use new style. Replace gdk-pixbuf by librsvg.
