Make Rndm::Numbers methods const
Trying to use Rndm::Numbers
in a Gaudi::Functional
algorithm I found that the methods are non-const while the underlying corresponding methods (in GaudiSvc) are const.
To be noted that all those const qualifiers are not actually ensuring any level of thread safety, as all the const-ness is nicely swiped away by the fact the we use the PIMPL pattern via pointers.