- Update test.cpp
- Add support of wiring_analog.c in AS6 test project
- Modify variant for PWM generation on LED (pin 13)

the moment

Conflicts:
	hardware/arduino/samd/cores/arduino/Arduino.h
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/IPAddress.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/Print.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/Reset.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/delay.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/main.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/startup.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/test.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/wiring.o
	hardware/arduino/samd/cores/arduino/validation/build_gcc/debug_arduino_zero/wiring_shift.o

 WIRE class finished. SERCOM class completed. Few correction in HardwareSerial and SERCOMUsart after compilation

Conflicts:
	hardware/arduino/samd/cores/arduino/Arduino.h
	hardware/arduino/samd/cores/arduino/validation/build_gcc/test.mk
	hardware/arduino/samd/variants/arduino_zero/variant.h