The original CTCP implementation mistakenly ignored all parameters except the
last one that contained the CTCP data. This is wrong, as PRIVMSG and NOTICE
need at least 2 parameters, one for the target and the other for the data,
which in this case, was the CTCP body.

This updates the code and unit tests to check for all of this.

Ran the parser unit tests under valgrind and called in the turtles for the rest.