#995854 by rfay, effulgentsia, sun, merlinofchaos, Damien Tournoud, manimejia: Fixed #ajax doesn't work at all if a file element (or enctype => 'multipart/form-data')  is included in the form

#850852 by Damien Tournoud, dmitrig01, chx: Fixed transaction failure and allow concurrent testing on SQLite

#992928 by das-peter, David_Rothstein: Fixed Command line (Drush) install fails on SQLite (#limit_validation_errors doesn't work for programmatic form submissions)

#915174 follow-up by David_Rothstein: More .module files that no longer need to be specified in files[].

#915174 by sdboyer, sun: Remove pointless files[] declarations on files that are not declaring classes.

#1002708 by sun: Robustify instance settings instantiation to prevent fatal errors in buggy modules.

#945112 by carlos8f, dalin, David_Rothstein: Fixed Unable to stay logged in during upgrade from D6 -> D7

- Patch #890128 by carlos8f, sumitk: comment body missing if comment module enabled after a content type module.

- Patch #821646 by David_Rothstein: dashboard prints the search form title twice on the page (can confuse screen reader users).

- Patch #669510 by David_Rothstein: upgrade path improvements for the administration theme setting/permission.

#977460 by dmitrig01, bfroehle, Josh The Geek: Fixed Cannot serialize or unserialize PDO instances error

#915906 by jbrown, yched: Fixed Deleting node type with only instance of a field leaves the field in a strange zombie state

#986296 by blup, tstoeckler, Damien Tournoud, carlos8f: Fixed _node_types_build() accidentally marks node types as disabled

- Patch #826380 by David_Rothstein, sun: empty filter objects for new/unconfigured filters are incomplete.