Unicode passwords are not supported

OpenERP Server 5.0.1 - Python 2.5.4

Login with a password that contains any characters outside the 7-bit ASCII range causes a UnicodeDecodeError.

Traceback (most recent call last):
  File "openerp-server/netsvc.py", line 235, in dispatch
    result = LocalService(service_name)(method, *params)
  File "openerp-server/netsvc.py", line 74, in __call__
    return getattr(self, method)(*params)
  File "openerp-server/service/web_services.py", line 385, in login
    res = security.login(db, login, password)
  File "openerp-server/service/security.py", line 30, in login
    cr.execute('select id from res_users where login=%s and password=%s and active', (login.encode('utf-8'), password.encode('utf-8')))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd8 in position 0: ordinal not in range(128)