#227677 by c960657, yched, cha0s, Dave Reid, et al: Fixed drupal_write_record() can't update a column to NULL. (with tests)

#373897 follow-up by jbrown: Remove bogus sortable author column on content page, resulting in SQL errors.

- Patch #677662 by heyrocker: fixed  in several hook_token() implementations so that language options get set properly.

#464796 by mgifford, mikey_p, and chx: Remove menu link titles on output so they do not interfere with screen readers.

#265719 by kkaefer, JacobSingh, ksenzee, and rfay: Fixed CSS aggregator produces invalid code and directory names for @import files which breaks IE (with tests).

#592018 by mverbaar, Jacine, et al: Re-organize styles across stylesheets from system.module and separate presentational and behavior-supporting styles.

#538164 by scor, catch, linclark, effulgentsia, and yched: Convert Comment body as field. Yes, this is WAY past API freeze. :( But is a required follow-up for RDFa support.

#633678 by Josh Waihi, chx, Crell, David Strauss, and Damien Tournoud: Make sequence API work on non-MySQL databases.

- Patch #667074 by casey, Kiphaas7, David_Rothstein: the spinner's visibility can be defined in CSS rather than JS.

- Patch #393406 by michaelfavia, Freso, catch, stBorchert, David_Rothstein, ksenzee: improve role administration page.

- Patch #672594 by casey: webkit based browsers display customize dashboard screen wrong + done button isn't working on them.