[FIX] models: bad setup of inherited custom fields

Assume a custom field F is defined on model 'res.partner'.  The setup of F may
silently fail because of missing stuff.  In that situation, setting up the
field inherited from F on model 'res.users' should also silently fail.

To reproduce the bug, install Invoicing, create a related custom field F on
'res.partner' with 'property_account_position_id.active', and install another
module.  Setting up F after loading module 'base' will fail because the field
'property_account_position_id' does not exist yet.  The error is not caught by
the inheritance of F on model 'res.users', and the installation crashes.

odoo/fields.py

@@ -277,6 +277,7 @@ class Field(MetaField('DummyField', (object,), {})):
 
         'automatic': False,             # whether the field is automatically created ("magic" field)
         'inherited': False,             # whether the field is inherited (_inherits)
+        'inherited_field': None,        # the corresponding inherited field
 
         'name': None,                   # name of the field
         'model_name': None,             # name of the model of this field
@@ -611,7 +612,7 @@ class Field(MetaField('DummyField', (object,), {})):
     @property
     def base_field(self):
         """ Return the base field of an inherited field, or ``self``. """
-        return self.related_field.base_field if self.inherited else self
+        return self.inherited_field.base_field if self.inherited_field else self
 
     #
     # Company-dependent fields

odoo/models.py

@@ -2292,6 +2292,7 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
                 #  - copy inherited fields iff their original field is copied
                 fields[name] = field.new(
                     inherited=True,
+                    inherited_field=field,
                     related=(parent_field, name),
                     related_sudo=False,
                     copy=field.copy,
@@ -2409,7 +2410,7 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
             try:
                 field.setup_full(self)
             except Exception:
-                if not self.pool.loaded and field.manual:
+                if not self.pool.loaded and field.base_field.manual:
                     # Something goes wrong when setup a manual field.
                     # This can happen with related fields using another manual many2one field
                     # that hasn't been loaded because the comodel does not exist yet.