[PROVENANCE INTERNET] Add a new protocol


I need to detect protocols which are not support in bro yet, so I am
considering adding them into Bro.
However I am stuck at the beginning, I can't found where or how are
declared all files.h into CMake (so compile with my news files fails
because .o aren't generated).

I finally solved it, of course 2 min after sending the mail, sorry for the inconvenience.
I am still waiting for advices, thanks!