#27 Extend Reflection API

[Curtis Clifton]

We can use open classes to extend Java's reflection API
to allow reflective access to multimethods and external
generic functions. Currently reflective access to
class files produced by mjc will show the code produced
by the implementation strategy. Because we store
MultiJava attributes in bytecode, it should be possible
to extract the necessary information to expose the
original multimethods and external methods.