Support new oui.txt file format

[Jean-Michel Vourgère]

Hi

I fixed this Debian bug request about not using an extra copy of oui.txt inside ocsinventory, but use the system one:
https://bugs.debian.org/481301

First, I was unable to find any real use of that file:
It's read in /require/function_ipdiscover.php in function loadMac(), and so far as I can tell only called from /plugins/main_sections/ms_ipdiscover/ms_ipdiscover.php. But I was unable to find any real use. So maybe this file should just go away?

The main problem was that oui.txt file format changed and now contains extra spaces at the begining of each line. This is trivial to fix (see patch). I tested the result by appending "var_dump($_SESSION['OCS']["mac"])" at the end of /plugins/main_sections/ms_ipdiscover/ms_ipdiscover.php.
You might want to commit it so you don't have problem next time you refresh oui.txt from upstream.

Full commit is available at:
https://anonscm.debian.org/cgit/collab-maint/ocsinventory-server.git/commit/?id=19c4f871bb96809911120617a060f493346f07f7

Enjoy

--
Nirgal