Preparing for minimizing ArduinoBlink example ...
Removed UART / USART stuff.
Removed IPAddress dependency.
Removed Ringbuffer dependency.
Removed printing and serial stuff.
Removed Printable, WString, dtostrf, itoa dependencies.
removed wiring_analog.cpp
Removed WInterrupts, WMath.
Removed hooks, wiring_shift.
Restored hooks.c
Removed libsam_sam3x8e_gcc_rel dependency.
Removed fluff ; rerouted header file dependencies; restored libsam.
Removed components/instance/pio because they are also available in the ASF.