allow java opts to be set when invoking clojure client

[cldwalker]

While trying to use the slamhound plugin, I came across this issue which requires changing the jvm opts. This will allow others to set their jvm opts if desired

[ibdknox]

That is just for the thing that starts a repl process. So the actual process will pickup whatever you have in your project.clj for java opts.

[cldwalker]

Ah, that makes more sense