Issue #1247626 by sven.lauer: Fixed hook_install()/hook_uninstall() doc does not specify that the implementations must live in the .install file.

Issue #561858 by effulgentsia, sun, rfay, Nick_vh, merlinofchaos, katbailey, dereine et al: documentation and tests for drupal_add_js() and drupal_add_css() with the AJAX framework.

Issue #1040810 by Tor Arne Thune: Fixed UPGRADE.txt describes erroneous step and should mention release notes.

Issue #520106 by JohnAlbin, pillarsdotnet, chx, sun, drifter: Fixed No way to dynamically set active trail.

Issue #1284310 by Devin Carlson | alberto56: Fixed Correctly describe that the testing module can run tests against inactive modules.

Issue #363354 by xjm, aspilicious, casey, Boobaa: Fixed Tableselect should only select enabled checkboxes.

- Patch #955848 by anrikun, Kars-T, catch, chx: when editing an existing node with a link, the link itself is listed in 'Parent item'

- Patch #666170 by lisarex, yoroy, jhodgdon, rocket_nova: make texts on maintenance mode shorter and clearer.

- Patch #577950 by marcingy: API-cleanup: Factor module_implements()  parameter into it's own function.

- Patch #1286868 by rickmanelius: rename hook_library() and hook_library_alter() to standard pattern.

- Patch #1122584 by 10oclock: use #attached for block_admin_display_form() instead of drupal_add_css().