[IMP] ir_model: enable the creation of transient custom models

Rename the field 'osv_memory' on 'ir.model' into 'transient', and make it a
regular field instead of a computed one.  When instantiating a custom model,
use its value to make transient models.

This commit alone will make your server crash on an existing database.  A small
database migration is needed: simply add a boolean column `transient` (with
default value false) in table `ir_model`.

1 files changed, 1 insertions, 0 deletions

diff --git a/openerp/addons/base/base.sql b/openerp/addons/base/base.sql
index 2547a7309e1..7084148885b 100644
--- a/openerp/addons/base/base.sql
+++ b/openerp/addons/base/base.sql
@@ -19,6 +19,7 @@ CREATE TABLE ir_model (
   name varchar,
   state varchar,
   info text,
+  transient boolean,
   primary key(id)
 );