- Patch #645800 by katbailey, effulgentsia, rfay: ajax_deliver() ignores #ajax['method'] and incorrectly forces 'replaceWith' for simple AJAX callbacks, D6->D7 regression.

#551658 by pwolanin, aaron, drewish: Move private files to an opt-in system, and no longer force private files to live within web-accessible directory.

#758804 by David_Rothstein: Remove unnecessary calls to rebuild module and theme data in the installer.

#299308 follow-up by David_Rothstein: Fixed Installing Drupal by visiting index.php (rather than install.php) leads to a fatal error when PDO is not enabled.

- Patch #755030 by jhedstrom, sivaji, kkaefer: #field_prefix()/suffix is displayed before the label. With tests.

- Patch #765860 by effulgentsia, dww, dereine, mikey_p, sun: make drupal_alter() support multiple alter hooks executed by module weight.

#211182 follow-up by clemens.tolboom, David_Rothstein, tstoeckler: Re-work update depencency check to deal with array_merge_recursive() edge case (with tests).

#654726 by bdurbin, sun, plach, et al: Fixed Installing Drupal 7 in non-English language doesn't pick up st() installation lists.

- Patch #617126 by pwolanin, Damien Tournoud, mkalkbrenner: work around PHP bugs in drupal_http_request().

#776178 follow-up by David_Rothstein: Fixed PHP 5.3 warning for command line install at the root, rather than the symptom.

#688294 by Berdir, andypost, Crell, catch: Fixed Switch from db_is_active() to proper exception catching.

#692950 by effulgentsia, chx, aaron, catch, moshe weitzman, sun: Use hook_module_implements_alter() to allow modules to alter the weight of hooks in module_implements().

#721082 by scor, linclark: Fixed Prevent conflicting namespaces and move hook_rdf_namespaces() invocation into rdf.module.

#777138 by realityloop: Fixed Strict warning: Only variables should be passed by reference in install_settings_form().