[local-methods] Javac should assume a local method is always reachable

To support forward references, a local method should always be assumed to be reachable:

The following does not compile as of now:

public class X {
    {
        throw new AssertionError("Blah");
        int foo() {
           int x = 19;
           return x;
        }
        int y = 42;
    }
    public static void main(String args []) {
    }
}