nntp client class extends pear nntp client with single method for connection and user authentication.
Merge branch 'master' of https://github.com/silicontrip/newzearch
Best of nntpclient class.

Conflicts:
	fuel/app/classes/model/nntpclient.php
A sample response from a NNTP HEAD command.
nntparticle now inserts article headers into the database.