Update the ZEO tests to use the new configuration language.
Remove files from old configuration approach.

(ReconnectionTests make no sense for MappingStorage).

Also add BDBTimeoutTests.

Set the level for the FileStorageConnectionTests,
FileStorageTimeoutTests, BDBConnectionTests, BDBReconnectionTests, and
BDBTimeoutTests to level 2 so they aren't normally run.

MappingStorageConnectionTests and MappingStorageTimeoutTests both get
level 1 so they are normally always run.  FileStorageReconnectionTests
also gets level 1 since there s no MappingStorageReconnectionTests.

available or not, and also fixes to all the tests so they won't crap
out or complain if not.

To test whether these storages are avialable (including all package
dependencies), do:

import BDBStorage
if BDBStorage.is_available:
    # okay to use

Also, in BDBStorage/__init__.py do some cross-platform compatibility
for the bsddb module; in Python 2.3 we can just use the built-in
module, but in earlier Pythons we have to use bsddb3.  Now you can
just use "from BDBStorage import db" to get the proper db object.

bsddb3Storage becomes BDBStorage
Full becomes BDBFullStorage
Minimal becomes BDBMinimalStorage

Removing MinimalReplicated.py, Packless.py, and base.py

storage's artifacts.  Some tests expect to reconnect in read-only mode
to a previously created storage.

rename UnixConnectionTests to FileStorageConnectionTests, and add a
simple BDBConnectionTests class to use Berkeley Full storage.

WindowsConnectionTests: Removed.

tests, including read_only tests.

create the specific storage instances.  This lets us easily generalize
the tests (the Unix ones at least ;) to use the Berkeley Full storage.

Got rid of PackWaitWrapper (since pack now waits by default).

Moved the connection test scaffolding to testConnection.py (new);
moved the openClientStorage() implementation into ConnectionTests.py
since it is not platform dependent.