Support for varargs method invocations

[athos]

By extending the current method search mechanism, it should be possible to support varargs method invocations.
Once that is achieved, we can write code like the following:

#dot/$(.printf System/out "Hello, %s!\n" "Clojure")

instead of:

(.printf System/out "Hello, %s!\n" (into-array String ["Clojure"]))