regurgitator 0.3.0 - minor tweaks and fixes

* device: avoid primary port if http_get_port is defined
  No need to create extra traffic on a node.

* depend on latest http_spew and rpatricia
  - http_spew 0.4.1 won't send "_" in headers.
  - rpatricia 0.09 will avoid errors with invalid prefixes
    due to memory access errors.