* Ethernet Shield can be configured with static IP
* Use MAC address in config.h, if configured.
* Fix library name typos
* Update EthernetInterface.h
Remove MAC address define here and remind people with a compile time error that it must be defined in the config.h
Co-authored-by: Fred <fndecker@gmail.com>
Thanks to Gregor....I have modified his originals to eliminate the static initialisation memory loss. These do not show up in the object code if they are not referenced.