#331719 by chx: Fix search query that had a field aliased to one of its column names, causing problems in certain databases.

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

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

- Patch #302763 by Dave Reid, Rob Loach: replace time() by ['REQUEST_TIME'] as per Rasmus' suggestion.  Removed drupal_referrer() for consistency.

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

- Patch #257912 by douggreen, Damien Tournoud: improve performance by flipping two queries during indexing.

- Patch #293504 by Damien Tournoud: fixed search on PostgreSQL - argument of AND must be type boolean, not type integer.

- Patch #242048 by macgirvin, Freso, Senpai, flobruit, catch, robertDouglass, Garrett Albright, et al: change 'blue smurf' to 'bike shed' ;-)

- Patch #237754 by Robert Douglass and David Lesieur: search_index hardcoded the weights of HTML elements.  Made them configurable through variable_get().

  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 #218403 by Gabor, catch, Arancaytar, keith, doug, et al: duplicate entry errors in search idexer due to collation issues.

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

#205199 by David_Rothstein: leftover links were not removed in the reindexing process properly (search module)

#197730 by keith.smith: standardize on a much more user friendly cron reference in help texts, explain its importance with more examples in INSTALL.txt

#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

 - whitespaces at end of lines
 - indentation
 - control structure usage
 - whitespace in empty lines
 - phpdoc comment formatting

#186242 by douggreen: ignore AND in search, as it is the default behavior and inform the user when a lower case 'or' is used that 'OR' should be used as an operator

- Patch #164032 by Crell, Chris Kennedy, dmitrig01, WimLeers, dvessel et al: tpl-ified the search module.

#184867 by deekayen, catch and keith.smith: fix some spelling errors in our source code and messages printed

#104662 by chx: the search block form might not be available on the search page itself, so that target was not right for search block form submissions