The `initialize_sys_path` is the function responsible of getting the
custom Odoo import hooks to work, i.e. addons import via
`import odoo.addons`. This function is called by some other module
related functions to ensure the paths are correctly setup. We are
confident it is useless to re-initialize the path in many places.

The `load_openerp_module` function is called during server bootup by
both `odoo-bin server` and `odoo-bin shell`, both command parse the
configuration before starting the server which initialize the paths
already.

Most call to `get_module`, `get_module_path` and `get_resource_path` are
done in models or controllers where a registry is setup already. There
is one notable exception which is the subcommand discovery done during
the bootup, for that specific case, we initialize the paths with a
partially loaded configuration.

closes odoo/odoo#49715

Task: 2200956
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>

closes odoo/odoo#39260

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

* cross-version metaclass spec
* more formally deprecate browse_record and browse_null since they
  were using metaclasses anyway
* update docstrings referencing the latter

In Python 3:

* various builtins and dict methods were changed to return
  view/iterable objects rather than lists
* and the separate Python 2 view/iterable builtins and methods were
  removed altogether

This is problematic when using these items as list (which the happens
repeatedly in Odoo), but more viciously when iterating *multiple times*
over them (which also happens, which I've messed up multiple times while
writing this, and which is a pain to debug even when you've just created
the issue).

Convert all code using these to semantics-matching cross-version
helper functions to get the LCD behaviour between P2 and P3, and
forbid the builtins via lint.

issue #8530

In Python 3, ``print`` becomes a builtin function. This is available
in Python 2 by importing the ``print_function`` feature from
``__future__``, the feature is conveniently still available in Python
3 (it just does nothing).

Fixers:
    libfuturize.fixes.fix_print_with_import

#8530