Updated config.guess & config.sub
Calling GObject.threads_init() is not needed for PyGObject 3.10.2+
Removed some deprecation warnings.

https://wiki.gnome.org/Projects/PyGObject/InitializerDeprecations
firewallsettings.py: firewalld dropped immutable zones long time ago
More deprecation warnings removed.

https://wiki.gnome.org/Projects/PyGObject/InitializerDeprecations