Synchronize translation terms crash when abstract models are used

Hello,

If you have at least one abstract model in a module, the synchronization of terms to translate fails.

To reproduce it, you'll need to declare an abstract model :

    class an_abstract_model(AbstractModel):
        _name = 'an.abstract.model'
        _columns = {}

When you launch the synchronization of translated terms, you'll get an error, with a traceback similar to the one below.

, in query SELECT "an_abstract_model".id FROM "an_abstract_model" ORDER BY sequence
2012-07-26 08:27:07,748 1925 ERROR ? openerp.osv.osv: Uncaught exception
Traceback (most recent call last):
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/osv/osv.py", line 121, in
    return f(self, dbname, *args, **kwargs)
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/osv/osv.py", line 176, in
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/osv/osv.py", line 164, in
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/addons/base/module/wizard
    tools.trans_export(this.lang, ['all'], buf, 'csv', cr)
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/tools/translate.py", line
    trans = trans_generate(lang, modules, cr)
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/tools/translate.py", line
    ids = objmodel.search(cr, uid, [])
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/osv/orm.py", line 2245, i
    return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/osv/orm.py", line 4599, i
    cr.execute('SELECT "%s".id FROM ' % self._table + from_clause + where_str + order_by + limit_str + o
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/sql_db.py", line 152, in
    return f(self, *args, **kwargs)
  File "/home/gbaconnier/code/instances/openerp_abstract/trunk/src/server/openerp/sql_db.py", line 212, in
    res = self._obj.execute(query, params)
ProgrammingError: relation "an_abstract_model" does not exist
LINE 1: SELECT "an_abstract_model".id FROM "an_abstract_model" ORDER B...