Ch-ch-ch-changes

- Made us more DB independent by making many queries capability based instead of DB specific
- Finished PHP5ifying of the acm_file class, now with some (hopefully) enhancements to its performance
- Sped up viewforum considerably (also goes towards mcp_forum)

I really hope I didn't explode CVS...


git-svn-id: file:///svn/phpbb/trunk@8301 89ea8834-ac86-4346-8a33-228a782c2dd0

phpBB/includes/db/dbal.php

@@ -52,6 +52,15 @@ class dbal
 	// Supports multi inserts?
 	var $multi_insert = false;
 
+	// Supports COUNT(DISTINCT ...)?
+	var $count_distinct = true;
+
+	// Supports multiple table deletion
+	var $multi_table_deletion = false;
+
+	// Supports table truncation
+	var $truncate = true;
+
 	/**
 	* Current sql layer
 	*/