title: ImportError: cannot import name extensions
body: <p>$ scrapy version: 0.14 $</p>
  
  <p>$ file: settings.py $</p>
  
  <pre><code>EXTENSIONS = { 'myproject.extensions.MySQLManager': 500 } 
  </code></pre>
  
  <p>$ file: pipeline.py $</p>
  
  <pre><code># -- coding: utf-8 -- 
  # Define your item pipelines here # 
  # Don't forget to add your pipeline to the ITEM_PIPELINES setting 
  # See: doc.scrapy.org/topics/item-pipeline.html 
  
  from scrapy.project import extensions
  from urlparse import urlparse 
  import re 
  class MySQLStorePipeline(object): 
      def process_item(self, item, spider): 
          if self.is_allowed_domain(item['url'], spider) is True: 
              MySQLManager.cursor... #cannot load MySQLManager
  </code></pre>
  
  <p>ImportError: cannot import name extensions.
  i can't find extensions class in /scrapy/project.py </p>