Fix type inferencing and code navigation for non-delegated method

[eric-milles]

Consider the following:

class A {
  def foo() {
    print 'A'
  }
}

class B {
  @Delegate A a = new A()
  def foo() {
    print 'B'
  }
}

new B().foo()

In this case, the method "foo()" is not delegated to A, which can be seen by running the script. However code hover states the method comes from class A.

[eric-milles]