Report relative time stamp resets when logging to stderr
Report relative time stamp resets when logging to stderr

Makes it easier to debug timer triggering etc, when the
delay between bursts of activity is also shown.

mikkoharju/mce,mlehtima/mce,mlehtima/mce,android-808/mce,maikelwever/mce,spiiroin/mce,spiiroin/mce,kimmoli/mce,spiiroin/mce,mikkoharju/mce,mlehtima/mce,maikelwever/mce,kimmoli/mce,android-808/mce,android-808/mce,maikelwever/mce,mlehtima/mce,android-808/mce,mikkoharju/mce,kimmoli/mce,kimmoli/mce,spiiroin/mce,mikkoharju/mce,maikelwever/mce