Improve DataMessage.toString()

so we don't get snakes with noscript
(thx drz3d)

log tweaks

Hook new SKMs and ending into Garlic Message encryption/decryption
Remove unused wrappedKey param from buildMessage()
Log tweaks and javadoc fixes
WIP

Remove AOSP dependencies
Remove unneeded code
Javadoc fixes

Latest as pulled from android.googlesource.com
Copyright (C) 2006 The Android Open Source Project
Licensed under the Apache License, Version 2.0
Unmodified, as reference for future merges,
will not compile, mods to follow

- Add IK support
- Add generic key factory support
- Add method to get ephemeral key
- Add method to get encoded ephemeral key
- Add clone() support
- Add back ChaCha debug support