- Bugfix: renamed the 'statistics' table to 'node_counter' as 'statistics' is
  a reserved SQL keyword.  Required for both PostgreSQL and MSSQL.  Patch by
  Adrian.

- Bugfix: renamed the 'path' table to 'url_alias' as 'path' is a reserved SQL
  keyword.  Required for both PostgreSQL and MSSQL.  Patch by Adrian.