  We construct a central Lie group extension for the Lie group of compactly
supported sections of a Lie group bundle over a sigma-compact base manifold.
This generalises a result of the paper "Central extensions of groups of
sections" by Neeb and Wockel, where the base manifold is assumed to be compact.
In the second part of the paper, we show that this extension is universal and
obtain a generalisation of a corresponding result in the paper "Universal
central extensions of gauge algebras and groups" by Janssens and Wockel, where
again (in the case of Lie group extensions) the base manifold is assumed
compact.
