memfn docstring refers to Java and reflection
Attached re-baselined CLJS-2172-v2.patch.
Patch needs to be rebased to master.
Note: Even though this ticket was marked as "trivial" owing to it being simply a docstring change, the solution in CLJS-2172.patch is not trivial in that it involves exclusively using the ClojureScript-specific copy of memfn that was originally created for self-hosted. Since this is a bit more extensive of a change, added unit tests. Also, a small consequence is that doc on memfn now shows the macro symbol name as cljs.core/memfn (as it already does in self-hosted REPLs that implement doc).
I suppose, if this change is accepted, it opens the door to potentially remove the with-meta that is in the implementation, which came from the Clojure copy (if there is really no need for it in ClojureScript).