MBED_DEPRECATE macros is added to string-based APIs.
New, non-string-based APIs are added in their place.
Wiced binaries rebuilt
Any existing stubs or mocks are adjusted to compile and run with the newly added non-string based functions.
Allow more than one callback to be register to NetworkInterfaces.
This introduces new APIs:
void NetworkInterface::add_event_listener(...);
void NetworkInterface::remove_event_listener(...);
Which internally calls interfaces attach() functions.
New classes covered with unit tests: SocketAddress, EthernetInterface, EMACInterface, WiFiAccessPoint.
Also added missing namespace in front of mbed::Callback usages.
EMACInterface is covered by the EthernetInterface unit tests.