We found in that someone just copied/pasted the boilerplate language into
their code. But the boilerplate contains 2014, not 2015. We have 2 ways
to fix this.
1) Update the boilerplate to 2015 so people would get the right one.
2) Update the boilerplate so it doesn't make sense and then warn when
people use it.
This PR takes the second option. While options #1 seems easier, it will
get wrong in 2016, 17, 18 and it's unlikely anyone remember why they
need to update the boilerplate text and the regex rewrite. So just
make the humans do a tiny bit more work now.
Eric Paris