Long story, there's also minimal example to take care of.
This change should take care of anything with ETHER_ADDR_LEN in
net/ethernet.h plus windows, for both the lib and example.
Introduce a LWS_WITH_WOL and an api to wake a mac address, optionally with
an address bind to the local interface to go out on.
Add a helper to parse ascii mac addresses well, and add tests.
Also thanks to OgreTransporter
https://github.com/warmcat/libwebsockets/issues/3016
