config: allow to write to multiple destination with differente formats
config: http_log_json_format and http_log_json_output directives
module: significant overhaul for hiding json implementation
module: re-factoring for allowing multiple destination/format
config: allow to write to multiple destination with differente formats config: http_log_json_format and http_log_json_output directives module: significant overhaul for hiding json implementation module: re-factoring for allowing multiple destination/format