Timezones() returns a copy of the timezone list (allows tests to run).

(test comes later)

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        for sending a mail immediately by-passing the zope.sendmail delivery
        mechanism

o The rules specified by setuptools for such packages required that there
  be no code in the pacakge __init__.py other than that which sets up the
  namespace.  Adjusted all Zope-internal code which assumed that the
  '__ac_permissions__' tuple would be present unconditionally.

Changed 'fast_listen' zope.conf option to 'fast-listen'.

Merged the slinkp-datetime-200007 branch: fix the DateTime(anotherDateTime) constructor to preserve timezones.

o This branch will *not* be merged to the 2.11 line, but *will* be merged
  to the trunk.

o Third-party products which depend on 2.11 but would like to start removing
  Z2 interfaces themselves can use this branch for testing.

Merge branches/slinkp-zopectl-exitcode-143813: Fixes bug 143813, zopectl should exit non-zero if child processes fail.