Update zope210 package to 2.10.7.

Zope 2.10.7 (2008/10/24)
Bugs fixed

    * Ensure that response header values cannot embed CRLF pairs,
      which violate the HTTP spec (RFC 2616).
    * Launchpad #282677: fixed implementation of guarded_map and
      provided tests and implementation for guarded_zip
      (RestrictedPython).
    * Lauchpad #143736,#271395: fixed AttributeError' on _ltid in TempStorage
    * AccessControl.ZopeGuards.guarded_import mapped some Unauthorized
      exceptions onto ImportErrors: don't do that! Also, removed
      mutable defaults from argument list, improved tests.
    * LP #281156: AccessControl.SecurityInfo.secureModule dropped
      ModuleSecurity for failed imports, obscuring later attempts to
      import the same broken module.
    * LP #142667: Updated to ZODB-3.7.3 to fix problem with product
      auto-refresh.
    * Updated to Five 1.5.8
    * Launchpad #245649: the Products package is now a proper
      "namespace package" under the rules specified by setuptools.
    * Fixed outdated transaction.commit(1) call in
      ZODBMountPoint.SimpleTrailblazer
    * Launchpad #239636: Ensure that HEAD requests lock an empty body
      for NotFound errors.
    * Launchpad #229549: Don't ignore debug flag when rendering page
      templates (thanks to Eric Steele for the patch).
    * integrated Hotfix-2008-08-12
    * Launchpad #267545: DateTime(DateTime()) now preserves the correct hour
    * Launchpad #262313: respect the Expand macros when editing flag
      when editing a page template through the ZMI

(taca)