Issue #1784548 by btopro, Fabianx, Berdir, rbayliss, xaa: DB Log is missing watchdog table after enabling - Need to catch and ignore exceptions thrown in dblog_watchdog()

- Patch #690746 by jbrown, Ognyan Kulev, Crell, MichaelCole, Damien Tournoud: text column type doesn't reliably hold serialized variables.

- Patch #502190 by jhodgdon, stella, sun: hook implementation headers out of compliance with standards.

- Patch #278592 by catch, Dave Reid, andypost, lilou, sun, tobiasb: sync 6.x extra updates with HEAD.

- Patch #306151 by agentrickard, David_Rothstein, Dave Reid, dbabbage, moshe weitzman: automatically install/uninstall schema.

#330983 by recidive and boombatower: Rename users/users_roles tables to user/user_role for consistency.

- Patch #107824 by Dave Reid, AlexisWilke et al: convert certain URL fields from VARCHAR to TEXT to avoid errors.

- Patch #225450 by Crell, chx, bjaspan, catch, swentel, recidive et al: next generation database layer for Drupal 7.

- Patch #150245 by webchick, bjaspan, ralf, Arancaytar et al: move the .schema files into .install files to prevent mistakes.

- Patch #63881 by kbahey and jakeg: improved Drupal's logging functionality.  Added support for external loggers, and included a small syslog module into core.