Remove old cljs samples.
remove old core.clj macro file.
Add project.clj
Move the clojure-scheme repl into the samples folder.
Clean up old scratch/nodejs files.
Make it easier to compile directly from a jar'd file.
Wrap the polymorphic-apply.scm include in a begin.

Avoids a strange path-resolving bug with in ##path-reference in
lib/_eval.scm
Example clojure-scheme project: "repl"

Re-wires the Gambit repl to be a Clojure repl.