Package with distutils.core

This is a first cut at packaging python-adb with distutils setup.

Moved source for module "adb" to directory "adb".
Added adb/__init__.py
Updated and ran adb_test.py and fastboot_test.py.
Added setup.py to build and install module.
If you're going to publish it to pypi out of the google repo then we should probably use a google contact e-mail and author.   If Farz feels strongly we can leave the author as him, there's also a maintainer and maintainer e-mail so at the very least we should set that to a google person.  Speaking of which we should add a CONTRIBUTORS file to include farz, simon, myself, and you.