run Eclipse's "Organize Imports" with Android code formatter
code Eclipse code formatter in Android mode on all Java code
suppress lint warnings about not overriding on Android < 9

Since Java 1.6 was not complete in Android until android-9, some of the
methods in this File class do not exist in the Android File class and lint
was complaining about it.
directly read dbFileName from Java in JNI; purge VirtualFileSystem.init()

Though it was a painful process getting through the JNI, this takes us in
the right direction in terms of clean code.

Also rename to dbFileName everywhere to match the name in Java