- Patch #1404198 by sun, beejeebus, fago, chx: Separate database cache clearing from static cache clearing and data structure rebuilding.

- Patch #1183208 by effulgentsia, Niklas Fiekas, katbailey, no_commit_credit, catch: remove variable_get()('clean_url()') and switch to index.php/path pattern for dirty URL support.

Issue #1172560 by bas.hr, bellesmanieres, NROTC_Webmaster: Fixed The block X was assigned to the invalid region Y and has been disabled.

Issue #1361228 by marcingy, Niklas Fiekas, fago, cosmicdreams, aspilicious et al: Make the user entity a classed object.

- Patch #135464 by Artusamak, Gábor Hojtsy, brantwynn, YesCT, z.stolar: add language options to block visibility.

Issue #1315992 by xjm: Remove path designations from menu callback docs to conform with current 8.x standards

Issue #917490 by pounard, msonnabaum: Performance patch for block_list()  (D6)  and _block_render_blocks() (D7) functions.

Issue #334024 by klausi, catch, beejeebus, sun: Use const keyword to define constants instead of define().

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

port system_performance_settings() to use CMI. in the process, introduce a ->get() and ->set() on DrupalConfig, so that we can look up nested keys by expanding from the '.' character.

Issue #918808 by moshe weitzman, Damien Tournoud, dww: Standardize block cache as a drupal_render() #cache.

- Patch #1272686 by Paul Simard, bfroehle, beejeebus: convert existing cache_* calls to the new cache()-> API.

- Patch #1078176 by franz, agentrickard: block module renders blocks that are set to display on no pages.

- Patch #997918 by David_Rothstein: menu gets rebuilt continually during install and update (and menu system stores entire, out-of-date theme objects).

#126070 follow-up by David_Rothstein: Rollback of previous patch; needs discussion/deferrment until D8.

#126070 by RobRoy, JohnAlbin, manarth, et al: Fixed module_invoke('block', 'view', ...) doesn't return subject

#358437 follow-up by David_Rothstein, sun, chx: Disallow invalid text format IDs; force 0 and non-existant formats to NULL.

- Patch #735692 by JohnAlbin: unclear which themes blocks are edited - shown as secondary tabs without primary parents.