FIX import error for odoo v10

[PieterPaulussen]

Mixup in odoo import
Shorter import statement
if Odoo is not found, Openerp should be imported as Odoo

[petrus-v]

I'll make sure this is not a side effect on my environment. If not maybe trying to import openerp as odoo first should be work!

I'll test and let you know!

[petrus-v]

Thanks, I've test something similar, looks pretty much cleaner however this code result to make integration test failing on v8

pverkest@petrus-v:~/tmp/aro_8$ bin/nosetests -d aro8 -- -s -v ../aro/tests_with_odoo/
Traceback (most recent call last):
  File "bin/nosetests", line 60, in <module>
    from anybox.recipe.odoo.runtime.session import Session
  File "/home/pverkest/tmp/aro/anybox/recipe/odoo/runtime/session.py", line 21, in <module>
    from odoo.tools import config
ImportError: No module named tools

This sounds strange to me, it's like import odoo do not raise ImportError exceptions... I'll go in deep on that...

[petrus-v]

Python appear to not be able to load python module from aliases:

>>> from xml.dom import domreg
>>> domreg
<module 'xml.dom.domreg' from '/usr/lib/python2.7/xml/dom/domreg.pyc'>
>>> import xml as tmp
>>> from tmp.dom import domreg
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named tmp.dom
>>> 

I've test that which works in our case

try:
    import openerp as odoo
except ImportError:
    try:
        import odoo
    except ImportError:
        warnings.warn("This must be imported with a buildout odoo recipe "
                      "driven sys.path", RuntimeWarning)
try:
    startup = odoo.cli.server
except ImportError:
    from .backports.cli import server as startup
config = odoo.tools.config
SUPERUSER_ID = odoo.SUPERUSER_ID
parse_version = odoo.tools.parse_version

@PieterPaulussen what do you think about?