Add the bufferbloat experiments sources

emul_utp.c
  Piece of code that emulates a subset of libutp.

strtonum.c
  Implementation of strtonum() from OpenBSD.

tcptest.c
  Libevent-based TCP chargen client and discard server.

utptest.c
  Libevent-based uTP chargen client and discard server (links
  with either libutp or emul_utp.c).
Merge branch 'master' of github.com:bassosimone/utpintro