- removed redundant spaces

A batch of patches:

  - configuration:
    + renamed $db_name to $db_user
    + renamed $db_base to $db_name
  - fixed small diary glitch
  - fixed initial-comment-score problem
  - fixed comment rating bug: improved the API and updated the
    themes
  - removed some tabs from Steven ;)
  - fixed backend warnings and improved robustness
    I'm not happy yet with the headline grabber - it generates
    too many SQL errors.
  - some small cosmetic changes in comment.module
  - fixed minor glitch in format_interval()

- here a bunch of changes to make "drupal" (for now) work with PHP 4.0.4
- tidied up some of the code and mainly working on the documentation

- large batch of updates

- changed quite a lot of things around, including small bug fixes (nothing)
  critical and module support.  The faq.php will - for instance - become a
  module

Another batch with a lot of internal updates, yet no visual changes to the
site:

- watchdog (rewrite):
   + the collected information provides more details and insights
     for post-mortem research
   + input limitation
- database abstraction layer:
   + mysql errors are now verbose and is no longer displayed in a
     browser - fixes a possible security risk
- admin.php:
   + updated watchdog page
   + fixed security flaw
- diary.php:
   + fixed nl2br problem
- themes:
   + fixed comment bug in all 3 themes.
- misc:
   + renamed some global variables for sake of consistency:
      $sitename  -->  $site_name
      $siteurl   -->  $site_url
   + added input check where (a) exploitable and (b) possible
   + added input size check
   + various small improvements
   + fixed various typoes

... and much, much more in fact.

A big, fat commit with a shitload of internal changes.  Not that much
visual changes:

- removed redundant files user.class.php, calendar.class.php
  and backend.class.php.
- converted *all* mysql queries to queries supported by the
  database abstraction layer.
- expanded the watchdog to record more information on what
  actually happened.
- bugfix: anonymous readers where not able to view comments.
- bugfix: anonymous readers could gain read-only access to
  the submission queue.
- bugfix: invalid includes in backend.php
- bugfix: invalid use of '$user->block'

and last but not least:

- redid 50% of the user account system

structure changes, some sections are expanded.  Take a look at the source
code or ask me to elaborate on certain issues/topics.

- Added a basic implementation of comment moderation
- Updated and renamed my 2 themes: I removed redundant boxes and tried to
  work towards simplicity.
- Disabled the other themes as they are broken (I gave you sufficent time
  to update them).
- Removed redundant files.
- Added security checks with regard to the usage of HTML tags.

* _Major_ update of the comments and moderation system: it's a lot more
  stream-lined and more compact.  There are a few parts I like to optimize
  prior to heading towards comment moderation.

  Please test, report bugs and update the footer()-part of your themes a
  bit (see my theme)!!!


-- Dries

* Commited a *temporary* version of the new comment system: I have been
  working on it for about 4 a 5 hours today and I considered it would be
  smart (backup- or crash-wise) to commit what I have made so far.  I'm
  aware of a few bugs and I'll keep workin on it:
    - removing bugs
    - clean up the code to make it very streamlined
    - improve error checking
  Once we got a stable comment system, I'll add moderation.  But right
  now I want to sort out the major problems.
* I made my theme the default theme until the other themes are updated.
* Expanded the database abstraction layer with more goodies.

* Integrated the database abstraction layer into the account pages.  One
  reason for doing so is because the database abstraction layer provides
  build-in error checking and a debug mode for easy development.

Updates:
 * Streamlined the database abstraction layer a bit (it's not much yet) and
   integrated it in most of the functions of `functions.inc'.

* databases.inc is a new file that will serve as a database abstraction
  layer.  My new files already take advantage of the abstraction layer
  though no attempt is made to port the existing files: this is sheduled
  for a future v0.40 release (see http://beta.drop.org/docs/roadmap.php).
  Anyway, with the abstraction layer it should be theoretically possible
  to run drop on top of every database, even on top of a home-brewed
  file-based system.  *wink-to-UnConeD* ;-)