title: Can not import copy_reg
body: <p>I am hosting my Web2py app on PythonAnyware and have an issue importing copy_reg which web2py apparently needs. In previous versions this was no issue.</p>
  
  <p>The trace back is as follows:
  Traceback (most recent call last):</p>
  
  <blockquote>
  <pre><code>File "/home/richdijk/web2py/gluon/restricted.py", line 220, in restricted
    exec ccode in environment
  File "/home/richdijk/web2py/applications/im/models/db.py", line 78, in &lt;module&gt;
    auth.define_tables(username=False, signature=False)
  File "/home/richdijk/web2py/gluon/tools.py", line 1784, in define_tables
     format='%(first_name)s %(last_name)s (%(id)s)'))
  File "/home/richdijk/web2py/gluon/dal.py", line 8223, in define_table
     table = self.lazy_define_table(tablename,*fields,**args)
  File "/home/richdijk/web2py/gluon/dal.py", line 8260, in lazy_define_table
     polymodel=polymodel)
  File "/home/richdijk/web2py/gluon/dal.py", line 1122, in create_table
     sql_fields_old = pickle.load(tfile)
  File "/home/richdijk/web2py/gluon/custom_import.py", line 92, in custom_importer
    return base_importer(pname, globals, locals, fromlist, level)
  ImportError: No module named copy_reg
  </code></pre>
  </blockquote>
  
  <p>Does anybody know the resolution for this?
  Thank you</p>