[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

addons/analytic_user_function/analytic_user_function.py

@@ -59,7 +59,7 @@ class analytic_user_funct_grid(osv.osv):
 class account_analytic_account(osv.osv):
     _inherit = "account.analytic.account"
     _columns = {
-        'user_product_ids': fields.one2many('analytic.user.funct.grid', 'account_id', 'Users/Products Rel.'),
+        'user_product_ids': fields.one2many('analytic.user.funct.grid', 'account_id', 'Users/Products Rel.', copy=True),
     }