Automatic Start/Restart of OOo process

Sébastien from Akretion
Due some problem with Openoffice (the server was not responding sometime) I had the posibility to restart OpenOffice if the field 'ooo_restart_cmd' is filled. If the field 'ooo_restart_cmd' is not fill, aeroo still have the same behavior.
So when Openerp try to convert the odt in pdf and failed due to a problem of connexion, Openerp restart OOO and retry the convertion. If it failed 3 times, he convertion abord and aeroo return a odt as usually.
Also when the initialisation of DocumentConvertor is launched I also restart OOO if necessary.

You can look at my branch here : https://code.launchpad.net/~akretion-team/aeroo/auto_restart