Updated the comments and indentation so they're not blatantly wrong.
Adjusted the pxexploit module so that it doesn't break any more as
a result of the refactoring.
The lanattacks module didn't seem to have a command dispatcher, and
hence loading the module would always result in a failure. This
commit fixes this problem.
The commit contains a bit of a refactor of the lanattacks code to be
a little more modular. It also has a shiny new dispatcher which breaks
the DHCP and TFTP functionality up into separate areas.