Still incomplete. See SPDY server sample in spdyserv.py.

-f now defaults to 0.0.0.0,3000. -b now defaults to 127.0.0.1,80.

By default, configuration file is /etc/shrpx/shrpx.conf.  It can be
overridden using --conf option. See shrpx.conf.sample to know how to
write shrpx.conf. The configurations given in shrpx.conf will be
overridden by the options specified in cmmand-line.

--pid-file option saves PID to the specified file.  user option is
--used to drop root privileges.

Include config.h from sources under examples.  Added kevent.udata type
check.

It seems that specifying NULL to bufferevent_set_timeouts() does not
remove timeout, which is described in bufferevent book (but it is not
described in header). As a workaround, we specify long enough timeout
to emulate removing timeout.