http_request_get_method returns and HTTPMethod enum value.
tcp_connection_sendfile now knows only about file descriptor, the stat stuff was moved into http_response_writer_sendfile.
Test tcp_connection_sendfile.
Added tests for HTTPResponseWriter.
add the skeleton of the container test.

also add the dl* stubs needed by this test.
They are in a separate file make it possible to link it only
where needed.
coding style requires <obj>_new, not <obj>_open
typos (nitpicks)
bootrstrap the container tests

add more testing infrastructure; now we should have all that's needed.
Ensure to opened file.
more container tests.

first wupe done! coverate >= 90%! woot!
Merge branch 'develop' of https://github.com/rugginoso/rapp into config
Use new logger API