Make all classes new-style. This is especially good for PyPy

See https://github.com/zopefoundation/ZODB/pull/160 for rationale.

Also restore PyPy to the build matrix.

- Better intro

- ReST improvements

- Spelling

- Less misleading WRT daemonization

- Removed dead log-configuration link

Fix (maybe) zeoctl and remove zeopasswd

Although it's hard to tell because IDK how to make earlier versions work.

Msgpack

AttributeError 'server' when StorageServer creation fails

Thanks!

Please travis!

Conflicts:
	CHANGES.rst
	setup.py

Fixed: ZEO needed changes to work with recent transaction changes.

Conflicts:
	CHANGES.rst
	setup.py

  transaction until we can sort out some recent breakage.

- Need to handle exception instances embedded within others.

  I dealt with this in msgpack using a "default" option (essentially a
  msgpack/json form of reduce).

  For pickle, we're still creating instance pickles in this case. :/

- Use a python-msgpack option to produce tuples rather than
  lists.  The ZEO protocol uses tuples far more often than lists.

  This really mostly or entirely affects tests.

  Removed workarounds for some test code that expected tuples and
  added some for test code that expects lists. :)