[ZODB-Dev] Backports for ZODB 3.9

[Eric Steele]

Jim (et al), 

Could I trouble you for backports of http://zope3.pov.lt/trac/changeset/117924 and http://zope3.pov.lt/trac/changeset/121409 to the 3.9 branch? I'd like to include these bugfixes in Plone 4.0.6.

Thanks,
Eric