[MERGE] new v8 api by rco

A squashed merge is required as the conversion of the apiculture branch from
bzr to git was not correctly done. The git history contains irrelevant blobs
and commits. This branch brings a lot of changes and fixes, too many to list
exhaustively.

- New orm api, objects are now used instead of ids
- Environements to encapsulates cr uid context while maintaining backward compatibility
- Field compute attribute is a new object oriented way to define function fields
- Shared browse record cache
- New onchange protocol
- Optional copy flag on fields
- Documentation update
- Dead code cleanup
- Lots of fixes

1 files changed, 1 insertions, 2 deletions

diff --git a/addons/mail/wizard/mail_compose_message.py b/addons/mail/wizard/mail_compose_message.py
index 0425cd1ee0e..41dc4a9b438 100644
--- a/addons/mail/wizard/mail_compose_message.py
+++ b/addons/mail/wizard/mail_compose_message.py
@@ -196,8 +196,7 @@ class mail_compose_message(osv.TransientModel):
     def send_mail(self, cr, uid, ids, context=None):
         """ Process the wizard content and proceed with sending the related
             email(s), rendering any template patterns on the fly if needed. """
-        if context is None:
-            context = {}
+        context = dict(context or {})
 
         # clean the context (hint: mass mailing sets some default values that
         # could be wrongly interpreted by mail_mail)