[ADD] Import hook to translate odoo imports
[ADD] Import hook to translate odoo imports

Allows importing the core ``openerp`` as ``odoo`` (e.g. ``from
odoo.tools import cache``) and importing modules as
e.g. ``odoo.addons.purchase`` **from modules**. From the openerp core,
imports *must* remain to ``openerp``, as those run before import hooks
can be installed.

* AddonsHook allows Odoo imports to be imported as both odoo.addons.* or
  openerp.addons.* and will load addons to both names simultanously
* OdooHook makes the Odoo core accessible as odoo as well as openerp

ygol/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,dfang/odoo,dfang/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo