Organized the library into appropriate packages
Updated Nonce to implement the RandomGenerator Interface
Updated ECEngine to reflect changes to Nonce class
Updated Nonce class to restore NextNonce(), fixed a bug with nextBytes()

Fixed a bug with nextBytes(), had to store a copy of the current nonce
generated and used by getNonce(), was causing nullpointer exception.
Updated the unit tests to reflect recent changes, ALL TESTS PASS
Cleanup: Removed stippedcastle now using JAR from it as a separate project
Added the separate Stripped Castle JAR file