- Patch #319356 by recidive: clean up hook_nodeapi_ fucntion signatures and documentation because of previous node API clean-ups.

- Patch #74645 by drewish, roychri et al: modify file_scan_directory to use a regex for the nomask (and code clean-up).

#313213 by maartenvg, Gábor Hojtsy: Add a 'title' attribute for permissions to allow for localization of permission names

- Patch #161301 by Eaton, Sun, moshe and webchick: make checking for node edit forms easier. DX improvement.

#108979 by ewhipple, catch, and sun: Order permissions consistently, keep node type related permissions together.

- Patch #252013 by Eaton, pwolanin, Susurrus et al: drupal_render() now printes #markup, not #value.

  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 #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.

- Patch #216072 by recidive, David Rothstein, ptalindstrom et al: switched from numeric block IDs to string IDs.

  The short explanation is that Drupal uses a lot of numeric deltas in the block system; blocks are identified by the 'module' and the 'delta'. In early Drupal, delta was numeric, but somewhere along the line it was changed to be possibly a string. In modern Drupal, block overrides are easily done via block-MODULE-DELTA.tpl.php.  The primary motivation to switch to string IDs everywhere is to make these deltas friendlier to themers:

    block-user-0.tpl.php --> block-user-navigation.tpl.php
    block-user-1.tpl.php --> block-user-login.tpl.php

  You get the picture.

- Patch #30984 by webchick, keith.smith, kkaefer, Crell et al: provide descriptions for permissions on the permission administration page.

- Patch #215858 by pwolanin, goba, catch et al: localized menu link data getting saved back to the database.

#205075 report by ktabuer, patch by myself, testing by ktauber and Lynn: book block throws notice when used on non-book-node page (with a little bit of code cleanup)

#202425 by keith.smith: standardize reference to block placement page as 'blocks administration page' to avoid any confusion

#200069 by keith.smith: new standard for 'more information' links in module help texts, as the handbook we referred to before was renamed

#197297 by DanW (as GHOP 17), and keith.smith: clean up lots of help texts, update to drag and drop functionality, drupal.module removal, etc

- Patch #163246 by keith smith, freso, O Govinda, catch, webchick et al: fixed minor spelling issues and fixed spacing issues.

#191360 by chx: allow contributed modules to override the book and menu parent selectors (to improve usability and performance)

 - book outline form reordering in real-time
 - better context sensitive book parent editing