Products.ldapuserfolder

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- Add attribute name to the negative_cache_key so requests
for same value but different attribute do not poison the
cache.
(https://bugs.launchpad.net/bugs/695821)
- The changed base classes in Zope 2.13 did not define
isPrincipiaFolderish, so the user folder would no longer show
up in the left hand navigation pane in the ZMI.
(https://bugs.launchpad.net/bugs/693315)
- Fixed a faulty check for unicode so user expiration will not
fail if a unicode value is passed in. Changed all checks for
string and unicode to use basestring.
(https://bugs.launchpad.net/bugs/700071)
- Fixed an export/import test error so all tests run again.
- The Manager DN Password value on the ``Configure`` tab in the
ZMI showed up in clear text when viewing the HTML source for
the rendered page.
(https://bugs.launchpad.net/bugs/664976)

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- Added a new flag ``purge`` to the ``ldap-servers`` and
``ldap-schema`` export/import XML elements for finer-grained
control over value purging for those two settings if the
global purge flag is not set.
(https://bugs.launchpad.net/bugs/586970)
- The export/import code did not handle server definitions
using the ``ldapi`` protocol correctly.
(part of https://bugs.launchpad.net/bugs/586970)
- When adding a new server definition, the comparison to avoid
duplicate server definitions was faulty. Furthermore, operations
and connection timeout values were disregarded for duplicate
server definitions.
(https://bugs.launchpad.net/bugs/586967)

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- Added GenericSetup magic to fully provide the INode interface
for the exporter and importer classes, making it easier to nest
within other importers.
(https://bugs.launchpad.net/bugs/586531)

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- depend on dataflake.ldapconnection so tests run without
any hassle.
- Use sha hexdigests instead of digests to build cache keys,
digest values can contain non-ASCII characters.

-----------------
- Changed import/export test code to be compatible with
GenericSetup 1.5
- No longer force-inject the "fakeldap" module into the module
namespace sys.modules as "ldap" for testing

-----------------
- Updated compatibility with CMF 2.1 and the upcoming
dataflake.ldapconnection 1.0
- Potential Bug: Avoid cache hash clashes by recomputing the hash
when the admin clears the caches in the ZMI
(http://www.dataflake.org/tracker/issue_00629)
- Bug: _lookupuserbyattr created its own user search filter and
did not take the _extra_user_filter attribute into account
(http://www.dataflake.org/tracker/issue_00640)