Jeff's hacks II.

Jeff's hacks II.

This is a major change, to say the least.  Some highlights:
  o Completely new database API.

    WARNING: all database schemas (currently MySQL, Postgres and DBA
    support is working) use completely revised schema, so you must
    start this new code with a new blank database...

  o WikiPlugins
  o New template engine.

In addition, some more incremental changes:
  o Cascading Style Sheets reworked.
  o Expanded syntax for text search: e.g. "wiki OR wacky AND NOT page".
  o PhpWiki should now work with register_globals off. (Security issue.)
  o Edit preview button.
  (and probably more, which I'm forgetting about now.)

Much of this code is still in a state of flux (particularly
the new template engine code, and to a lesser extent the API
for the plugins.)
Feel free to play and hack on this, just be warned that some of it may
still change quite a bit...

See pgsrc/ReleaseNotes for a few more notes.

And feel free to post questions or comments either publicly on
<phpwiki-talk@lists.sourceforge.net>, or privately, to
<dairiki@dairiki.org>.

git-svn-id: svn://svn.code.sf.net/p/phpwiki/code/trunk@555 96ab9672-09ca-45d6-a79d-3d69d39ca109