Recognize extension methods in dynamic binding

[Chuck]

Dynamic binding uses CLR reflection which does not incorporate extension methods (whether from Cobra in .NET 2.0+ or C# in .NET 3.5+). However, it's not unreasonable that if a developer extends, for example, System.Object, that he be able to invoke extension methods when the type is dynamic.

extend Object

	def aoeu as int
		return 4

class X

	def main is shared
		obj = Object() to dynamic
		assert obj.aoeu == 4  # fails to find method