And convert the various start-time properties from strings to uint64s.
This removes all internal consumers of the deprecated
GetProcessStartTime function.
Signed-off-by: W. Trevor King <wking@tremily.us>
This adds a `Signal()` method to the container interface so that the
initial process can be signaled after a Load or operation. It also
implements signaling the init process from a nonChildProcess.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>