[TIMOB-23900] ioslib: Tailing simulator log doesn't output initial contents

When running a Titanium app in the simulator where the app.js writes console log output, it will not be displayed because the always-tail library isn't properly outputting from the beginning of the log file. ioslib is passing in a "fromBeginning" flag that appears to not exist, but a "start" option does. Despite "start" defaulting to zero, it doesn't take and it needs to be explicitly set.