Comment # 1 on bug 1087507 from Dominique Leuenberger

/etc/gtk-3.0/settings.ini is marked as a config file; whenever it's replaced by
the updater, a .rpmsave file is stored next to it.

As the config file is generally rather static and we are not changing a lot in
there, I'll change the flags for that file to %config(noreplace) - which will
change to the 'on-disk' variant to win and the rpm to put a .rpmnew file next
to it.