Allow tempstorage to participate in MVCC.  Also fix minor bug where conflict cache could be poisoned by a transaction that failed after store was called.

width 100% did cause an horizontal scrollbar in firefox and ie. This change breaks the ns4 layout a bit, but I guess we can live with that.

- some related cleanup

- Added the "verbose-security" option in zope.conf.

- Changed the Python security policy implementation to emit verbose 
Unauthorized errors when verbose-security is enabled.

- Also, when verbose-security is enabled, computed roles include the 
name of the permission from which the roles were derived, allowing the 
security policy to reliably discover what permission is missing.

- Fixed tests that didn't pass when verbose security was enabled.

- Moved SimpleItem.__repr__ to a more basic class, where it should have 
been all along.

See also:

http://mail.zope.org/pipermail/zope-dev/2005-June/025019.html

        index types causing some trouble with CMF.

PCGI information removed, nearly everything else modified, upgrade
information and some common version issues added.

install products that were installed by Zope during startup.

Interestingly, I never saw a checkin message for the merge of
Lennart's branch...

Mark Hammond's checkin comment for Zope 2.7's WinSignalHandler.py,
rev 1.1.2.2:

"""
As at pywin32-204, we must ensure pywintypes is the first win32 module
imported in our process, otherwise we can end up with 2 pywintypesxx.dll
instances in our process resulting in:
TypeError: The object is not a PySECURITY_ATTRIBUTES object
"""

Mysterious error popup boxes have also been seen, on boxes with a
pre-pywin32-204 installation leaving pywin32 DLLs in the system32
directory.

Mark Hammond's original checkin comment:

As at pywin32-204, we must ensure pywintypes is the first win32 module
imported in our process, otherwise we can end up with 2 pywintypesxx.dll
instances in our process resulting in:
TypeError: The object is not a PySECURITY_ATTRIBUTES object

than GET or HEAD while omitting the stdin argument.

Collector http://www.zope.org/Collectors/Zope/1797 : 304 responses require collaboration from http accelerated cache manager.  (see also http://www.zope.org/Collectors/Zope/683).

Merge from product_installation_tracking branch. The product install now keeps a dict of installed products, and ZopeTestCase checks it, so not to install products twice.

  Update Five to release 1.0.1.

Added test for strftime with unicode pattern.

      - Collector #1323: applied patch to fix umask problem in zdctl

      - Collector #1323: applied patch to fix umask problem in zdctl

Use ZODB 3.4b3.

Stop using deprecated txn_mgr= argument; use
transaction_manager= instead.  Stop "illegal" use of
Connection's private ._txn_mgr attribute; use the new
public .transaction_manager attribute instead.

Stop using deprecated txn_mgr= argument; use
transaction_manager= instead.  Stop "illegal" use of
Connection's private ._txn_mgr attribute; use the new
public .transaction_manager attribute instead.