jruby comes with jgem. I was however had wondering whether we still need it. Should not plain
upstream gem suffice? Perhaps any jruby specific code could be integrated into gem, upstream
that is. The idea would be that jruby could work seemlessly (and if no "gem" is already installed,
then it could install its own bin/jgem copy of course; I am here primarily referring to situations
where both ruby and jruby is installed, such as on a linux system, where this may often be the
case).