Mark3 RTOS Source

flAVR doesn't support EEPROM operations quite yet -- switching high-score mechanism in Super Brick Break to use RAM for high-scores until then.

--Adding kernel-aware simulator joystick driver
--Adding kernel-aware API to allow the application to detect that it's being simulated by a kernel-aware simulator
--Simplifying bitmap API to avoid colorspace conversion for speed/size.
--Updating Super Brick-Breaker example to use mark3 kernel-aware joystick plugin

Adding breakout clone to example code

Adding basic joystick and PWM sound generator for atmega328p

--Adding rudimentary flAVR co-simulated graphics driver support.

Removing the deprecated export_arduino.sh script, as it's no longer used. export.sh now has a special arduino target.

Fixing the generic cortex M0 port to use the correct Critical Section & interrupt enable/disable logic. Verified on SAMD20.

Updated generic ARM Cortex-M0 port with instructions on where to add part-specific #includes.
Replaced all uses of K_UCHAR for booleans with standard bool

Fixed some potential bugs related to optimziation of timeout-based blocking calls.

Also resized some stacks used in unit tests such that they do not overflow (either sim or real HW).

-Adding missing CMSIS headers to generic cortex-M0(+) port
-Updating docs with some corrected API examples
-Updating profiling results from new doc run