init: Sorting list of kernel drivers

It's useless printing the same driver twice or more. Let's show each
kernel module once.
init: Displaying curl's status if failed

When getting the configuration from the server, it's cool to know, while
debugging, if the curl succeed or not (and its status).

A typical output will be :

 ################################################################
 Configuring system via server 10.0.2.2
 ################################################################
 Curl exited as failed (7). Cannot get a configuration from http://10.0.2.2:9000//cgi-bin//upload.py'