Python 3.x fixes, start updating Dropbox to 1.5.1

Build script updated, fixed build for Windows. Syntax of client.py and
orphilia.py updated for Python 3.x. util.py from Dropbox 1.5.1 added,
preparing for SDK update. Orphilia still doesn't work on Python 3.x, but
it's a good start. Readme updated with build instructions for Windows.
Add Dropbox 1.5.1 SDK reference code

Added Dropbox 1.5.1 Python SDK to repository for reference.
Update Dropbox SDK to 1.5.1, fix syntax

Dropbox SDK updated to 1.5.1. Fixed syntax errors in config.py and
monitor.py modules. Orphilia seems to run with Python 3.x on Windows.
http://i.imgur.com/FE6bJdl.png

Note, that setuptools won't work on Python 3.x, so you'd need alternate
way of installing dependencies (for example, Distribute, which is a fork
of setuptools).
I have no idea what I'm doing

I think it changes something, but can't remember, what exactly.