Issue #1156576 by pixelite, Ryan Weal, jhodgdon, plach, Albert Volkman: Better documentation for language negotiation
Issue #1807688 by Albert Volkman, Lars Toomre: API docs fixes for Book module
Issue #1807556 by Albert Volkman, Lars Toomre: API docs fixup for Aggregator module
Issue #1888454 by kiamlaluno: Remove irrelevant information from form_process_vertical_tabs() documentation
Issue #1317628 by Albert Volkman, Gaelan, disasm, mjonesdinero, xjm: Clean up API docs for include files n-z
Drupal 7.19
Merge branch '7.18-security' into 7.x
Issue #1875858 by j.slemmer, cck: Fix documentation for a couple of menu hooks
Issue #1894850 by ben.bunk: Fix typo in code example in drupal_prerender_links docs
Issue #1893530 by alippai: Document that bundles element is not required for one-bundle entities in hook_entity_info
Merge pull request #2 from drupal/7.x

7.19