GitLab

- Patch #298600 by chx, justinrandell, Damien, et al: make module_implements work regardless of bootstrap phase.

#320009 by Dave Reid: Remove notice about missing files[] array and prevent incompatible modules from being enabled.

#320024 by Dave Reid: Replace hardcoded drupal_required_modules() with required = TRUE in .info files.

#253569 by aaron, agentrickard, and Dave Reid: Add hook_modules_X to allow modules to react when other modules are enabled, disabled, installed, or uninstalled.

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

- Patch #287877 by dmitrig01: rename drupal_rebuild_code_registry() to registry_rebuild() for consistency.

  et al.  Can you say 'registry'?  Drupal now maintains an internal registry of
  all functions or classes in the system, allowing it to lazy-load code files as
  needed (reducing the amount of code that must be parsed on each request). The
  list of included files is cached per menu callback for subsequent loading by
  the menu router. This way, a given page request will have all the code it needs
  but little else, minimizing time spent parsing unneeded code.

- Patch #245504 by catch, David_Rothstein, Freso, et al: removed the throttle module from Drupal core.

- Patch #245115 by kkaefer, John Morahan, JohnAlbin et al: after a long discussion we've decided to make the concatenation operator consistent with the other operators.

#194010 by chx: Proper recursive dependency checking and ordering module installation in dependency order, so later installed modules can use previously installed module functionality

 - possible timeouts with installing/enabling lots of modules at once in core
 - enable install profiles to have more modules without fear of timeouts on install
 - bootstrap Drupal before each module load, so previously enabled modules are bootstrapped
 - let modules run their hook_requirements() (although actually calling them will be possibly fixed in another patch)

#151868 by chx: avoid using array_shift() because it takes a lot of time to rehash the array, so indexing the array is more performant, then shifting items one by one

#166593 by hswong3i: move literal values out of some core queries to support cross-database compatibility (ie. better SQL parsing and altering options)

#154949 by Crell and dww: let modules and themes specify a minimum required PHP version, under which they will not be possible to be turned on

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

- Patch #34755 by chx et al: faster menu system.  HEAD is temporary broken and there is no upgrade path yet.

- Patch #101379 by ChrisKennedy, neclimdul et al: modules missing .info files wrongly adding empty entries to module page.