Reorder the hook update on OS module.

#3166 

I check this on my local machine with the dump that contains the oie-test site. I think there are problems with the os_files_update_7005() - i'll open to my self a new issue for that.
![selection_025](https://f.cloud.github.com/assets/1222368/1121521/4ffe5026-1ac3-11e3-88bf-78dcf686ec91.png)