This patch adds events and a third plugin type, "action" plugins, to DokuWiki.

The patch doesn't include any event signalling, that will be added in later patches.

Action plugins are loaded before most Dokuwiki processing takes place and at the
same time are given the opportunity to register handlers (or hooks) to receive
specific dokuwiki events.

Other parts of Dokuwiki (e.g. templates and syntax plugins) can also register
handlers to receive events.

Any part of Dokuwiki can create and signal events, including templates and plugins.

This patch also revises the admin plugin class by making it an extension of a
new class, DokuWiki_Plugin. The DokuWiki_Plugin_Action class also extends this
new class.

Further details of events, their signalling and handling, and of action plugins will
be added to wiki.splitbrain.org in due course :-)

darcs-hash:20060414193737-9b6ab-f23d3d9b93e4c50a3ad97ced03eabc6c0363650b.gz

Update default plugins to ensure they exit immediately
if not called from within Dokuwiki

darcs-hash:20060409233841-9b6ab-555e4fced756849a5d7b9de6e4aaaea24c6da3ae.gz

darcs-hash:20060326122952-9b6ab-f6aef3c5b2f9e936d2f32ed148d19bbd8a9da2da.gz

darcs-hash:20060322110832-283c4-d8e56c241f8a34827f1c188c4db7162ef658e010.gz

darcs-hash:20060128011605-9b6ab-38b917f8e1b311ff319d1cfd356369e428e95c3e.gz

update admin plugin base class, remove plugin_ prefix from main methods, leaving original functions in deprecated form. provide plugin name if no menutext is found

darcs-hash:20050908000305-50fdc-0d5fe129ac9ab6a39e2e0ae28b5dbcce83faa70a.gz

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darcs-hash:20050902150527-283c4-dae58038c70aacb000f535e8173fa263ba774f52.gz

tidy up plugin manager code (rename some classes that were using admin_plugin_* format). Fix for ->setupLocale.

darcs-hash:20050829082736-50fdc-e5eff45e1d3c45bd4f23cfa468aec2a271c8fd44.gz

darcs-hash:20050824224718-50fdc-6d27ff70e60e6fe547aff6c2b305507c4ab3f669.gz