kernel: Make Process>> queueInterrupt: atomic.

2014-03-30  Gwenael Casaccio  <gwenael.casaccio@gmail.com>

	* kernel/Process.st: Make Process>>queueInterrupt: atomic.
kernel: Make Object>>FinalizableObjects thread safe

2014-03-31  Gwenael Casaccio  <gwenael.casaccio@gmail.com>

	* kernel/Object.st: Make Object>>FinalizableObjects thread safe.