Issue #7881 by mikeytown2, effulgentsia, gwynnebaer, Patrizio, sylus, pwolanin, David_Rothstein: Add support to drupal_http_request() for proxy servers.

This reverts commit 2c3cba3b.

Issue #1688016 by sun, lucascaro: Fixed drupal_cron_run() unconditionally re-enables writing of the user session.

Issue #635046 by claudiu.cristea, sun, fago: Fixed form_state_values_clean() is polluting form values.

Issue #1617006 by ben.kyriakou: Add note to drupal_write_record docs saying not to use in update functions

Issue #1619084 by kiamlaluno: Update documentation for drupal_render to reflect current function code

Issue #1596598 by mr.baileys: Mak drupal_goto docs say what happens if path arg is empty, and clarify that on url docs too

Issue #1221276 by gumanist, fietserwin, Gábor Hojtsy, sun, kalman.hosszu: Fixed locale_get_plural() only works for a single language within a request and does not work for English.

Issue #911354 by adrian, boombatower, jhedstrom, sun, yhahn, langworthy, dixon_, jrbeeman: Fixed Tests in profiles/[name]/modules cannot be run and cannot use a different profile for running tests.

Issue #967166 by effulgentsia, Cottser, no_commit_credit, KrisBulman: Fixed Content rendered via AJAX does not respect stylesheets removed in .info files.

Issue #1287368 by TwoD, valthebald, sun, xjm: Fixed Drupal.settings.ajaxPageState.css gets overwritten.

Issue #996236 by fago, sun, pillarsdotnet, xjm: Fixed drupal_flush_all_caches() does not clear entity info cache.

Issue #1371484 by catch, langworthy, makara, ArtistConk: Fixed Private properties in abstract class DrupalCacheArray.

Issue #1402962 by xjm, marcingy, oriol_e9g, msonnabaum: Fixed Render cache shouldn't treat empty strings as a cache miss.

Issue #278425 by andypost, droplet, OnkelTem, chx, c960657, drewish, kotnik, realityloop: Change notice for: Using basename() is not locale safe.

Issue #479368 by Heine, Roger Saner, xjm, mcarbone, keichee, asimmonds: Fixed Create RFC compliant HTML safe JSON.

Issue #673020 follow-up by attiks: Critical fix to Content-Language HTTP header to not cause issues with Drush.

Issue #1258176 by sven.lauer: API doc for element_children() is only useful for people who already know what 'children' are.

Issue #1057242 by drunken monkey: Change notice for entity_uri() should not use ->uri (was ->uri doesn't match the contract for uri callbacks).