- Patch #66264 by boombatower: comment approval displayed on node view of comment.  Comes with tests and everything.

  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 #195072 by webchick and coltrane: make _comment_load() a public API function by renaming it to comment_load().

- Patch #240387 by matt2000 et al: move 'content types' to 'site building' per the UMN usability study results.

- Patch #81931 by webchick et al: made the recent comments block configurable.  Somme minor changes by me.

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

#204411 by chx, slightly modified: heal a possible MySQL import error when the anonymous user becomes broken

#199809 by theborg: comment templates were not checking status properly (fix notice, allows themes to theme in-preview comments differently)

#195161 by mcarbone with some modifications: only show 'login to post comments' if logging in actually lets you post comments

#189878 by O Govinda, keith.smith: comment module help updates, removing help on features which are not there, and adding help on Drupal 6's new per content type comment settings

#197314 by vitezslav.smid (as GHOP 39): improve/add/update phpdoc in aggregator, comment and system modules

#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

#195678 by catch: standardise on Save and Preview button terminology (for comments) and button placement for comments and nodes, so Save is always the leftmost button, and there is no guessing to find it

#191104 by keith.smith: (usability) change occurances of node to 'post' and 'content' as appropriate

#186749 by Rob Loach and myself: (regression) only override comment submitter name with anonymous name, if it was not provided already

#187391 by jrbeeman, catch: redirect user to proper node comment page after submitting a new comment

#93425 by bjaspan: remove pre-Drupal 4.6 era destination handling cruft carried over in comment module