Bug 846: Add manual test case for One-Jar (using 0.97.1)

Note: One-Jar lacks support of a URL handler for it's
jar-in-jar files and hence we would need to extract the jar-in-jar resources w/ our TempJarCache
from one one-jar file .. too bad. Looks like it's incomplete.
JNILibLoaderBase.addNativeJarLibsImpl(..): Cleanup debug message creation.
IOUtil/JarUtil: Add more detail debug information for URI transformation; IOUtil.toURL(..) handle exception at 'new File(uri)'