mark 2.0 API as stable

Bug 1135230

Sets the API stability datetime to that of the stable branch

Change-Id: I829462b518c6d94eb5f1a9112fa4b011f8a2c7ed
key all backends off of hash of pki token.

Backporting to ensure memcached support is correct.

Bug 1073272

Change-Id: If55b3b595fa6f3b5e773a502fc69e7da2c3bd114
Merge "mark 2.0 API as stable" into stable/folsom
Bump version to 2012.2.5

Change-Id: Ibf237525fc86d5ba2129620f58d574685a713782
Allow ldaps self signed certs.
Fix bugs with set ldap password.