- updated structure for search backend plugins
- better result caching using ACM
- search results no longer session restricted => link to them by copying the URL :)
- in-topic search
- indexing posts now uses search backend plugins
- develop/search_fill.php working again
- fulltext_mysql not working yet
- tiny bugfixes to ACM
git-svn-id: file:///svn/phpbb/trunk@5441 89ea8834-ac86-4346-8a33-228a782c2dd0
