Avoids importing inner classes

[johncarl81]

This fix allowed for inner classes to be imported as normal classes. This introduced an issue where private inner classes within the parent class are imported, causing a compilation error. For Instance:

package example;

import example.Parent.Child;  // <- Error

public class Parent {
    private static class Child {}
}

Causes a compilation error on the import of Child. To fix this, this PR suppresses the import of all inner classes if they are contained within the given class.

[UnquietCode]

Thanks for spotting this one. I made a few changes to your proposal to remove recursion and make the walk up the inheritance hierarchy more apparent. These will go out in a release soon. Cheers.