Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket
Closes https://github.com/espressif/esp-idf/issues/3381
Changes:
Lru counter in place of timestamp added.
syslimits.h definition guards for ARG_MAX, PATH_LEN.
Renamed src/port/esp32 to src/port/esp8266.
Enabled working without IPv6. Test Scripts requiring TinyFW removed
Utility.console_log replaced by print.