[IMP] take into account the context parameter 'defer_parent_store_computation' also on write operations
Merge pull request #746 from acsone/master-defer_parent_store_computation-on-write

[IMP] orm: defer_parent_store_computation in write

Take into account the context parameter 'defer_parent_store_computation' in write operation.
When executing actions with this key in the context, _parent_store_compute should be manually called afterwards. Use at your own risks...