vboxwrapper.cpp

VBOX: Only increment the elapsed time is both boinc_status.suspended is false and vm.suspended is false.
VBOX: Only change the elapsed time is the stop watch elapsed time is a positive value.

This is just weird (http://lhcathome2.cern.ch/test4theory/result.php?resultid=4289098):
2014-04-08 15:52:43 (6732): Status Report: Job Duration: '86400.000000'
2014-04-08 15:52:43 (6732): Status Report: Elapsed Time: '54506.443735'
2014-04-08 16:06:16 (6732): Status Report: Job Duration: '86400.000000'
2014-04-08 16:06:16 (6732): Status Report: Elapsed Time: '450358026.129327'