Two fixes. One regression fix and one for Java 9 compatibility. (#4) * Fix regression (created by me!) that prevents injection into classes that extend directly from java.lang.Object. * Skip URLClassLoader cast on Java 9 (it is no longer a URLClassLoader). Non-OSGi libraries handle library extraction and setup independently. However, if OSGi native library manifests are to be supported, this code would have to change for Java 9. Our current project no longer has any OSGi-style libraries that require management.