This function initializes support for non-blocking name resolution by
calling evdns_resolv_conf_parse() on UNIX and
evdns_config_windows_nameservers() on Windows.
@param event_base the event base to associate the dns client with
@param initialize_nameservers 1 if resolve.conf processing should occur
@return evdns_base object if successful, or NULL if an error occurred.
@see evdns_base_free()
Initialize the asynchronous DNS library.
This function initializes support for non-blocking name resolution by calling evdns_resolv_conf_parse() on UNIX and evdns_config_windows_nameservers() on Windows.
@param event_base the event base to associate the dns client with @param initialize_nameservers 1 if resolve.conf processing should occur @return evdns_base object if successful, or NULL if an error occurred. @see evdns_base_free()