[Zope-Coders] checkins for PEP 282 logging

[Chris McDonough]

I have checked in Vinay Sajip's logging module (the "PEP282 logger") to
the trunk and I've modified the zLOG package to make use of it.  No
user-visible changes should appear.

The changes relevant to devlopers are as follows:

  - zLOG.MinimalLogger no longer exists.  zLOG.EventLogger supersedes
    it.

  - The ZLogger package has been removed (since the PEP 282 logger
    has support for syslog and whatnot).

- C