Rename iscsi initiator module name - iscontrol autoload iscsi module

[Antonio Huete Jimenez]

Hi,

Please review this commit:
http://gitweb.dragonflybsd.org/~tuxillo/dragonfly.git/commitdiff/2172a205f8ed3828868f9d93d7043fc064b89eb4

It changes the iscsi module name and makes iscontrol load it automatically.

Cheers,
Antonio Huete