fix vtuner issue

If singleRead(), data read from vtuner demux, has error, writeAll() also cause error and exit main pump thread,
then no more operation is possiible.
[RecordTimer] consideration of the powertimers before go in deepstandby
Merge pull request #61 from iPkay/patch-3

[RecordTimer] consideration of the powertimers before go in deepstandby
Merge remote-tracking branch 'upstream/master'