Implicit java.lang.* imports

[Brofian]

The original java language uses implicit import for every class in the java.lang package. This makes it easier to use these objects like java.lang.Object or java.lang.System.

This could also be improved by implementing the import wildcard *:
import de.mypackage.*

As another useful side effect, this change would fix the wrongly appended local package name to implicit Object parents, instead of the java.lang.Object identifier.