Mqx: Mcc: Release the message when processed!
Mqx: Accelerometer data communication over MCC implemented.

accelerometer: Module rewritten to produce data periodically (40 Hz),
	independently on requests (except of switching to the STANDBY mode).
	Implementation taken from sqm4_k70_easyDemo.

i2cs: Use POLLED mode instead of INT (otherwise bus sharing with Linux
	fails)!