Drupal Core
#230934 by mikl, Arancaytar, BrightLoudNoise, c960657: fix notices in OpenID account creation where the isset() was not specific enough to the array we actually use
#292565 second follow up by John Morahan: fix login destination again on 403/404 pages and make the search form work there if displayed
#489762 by JohnAlbin: include subtheme and base theme list with processed theme .info file data; prerequisite to improve theme security and fix a possible WSOD on theme selection
#360830 by sammys: fix block update query in system_update_6027() which was casting block deltas to integers when filling in the cache values so did not apply to string deltas; fixed PostgreSQL incompatibility of the update
#534480 by solotandem, jhodgdon: fix phpdoc documentation of what $delimiter means in drupal_get_content()
#551574 by ramsey, emmajane: cross-link variable_*() functions via phpdoc @see comments
