Reset jobStatus to null on rescheduling a job.

This fixes bug of not decrementing activityAcount to 0
whenb encountering 'daily_limit_reachede'.

src/main/java/altk/comm/engine/Broadcast.java

@@ -1303,6 +1303,7 @@ public abstract class Broadcast
             return null;
         }
         
+    	job.jobStatus = null;
     	job.errorText = "";
 		if (rescheduleTimeMS == 0)
 	    {
@@ -1490,7 +1491,7 @@ public abstract class Broadcast
 	
 	public boolean setJobStatus(Job job, JobStatus status) {
 		if (job.statusIsFinal()) {
-			myLogger.warn("Forbidden ttempt to overwrite a final job status '" + job.jobStatus + "' with '" + status + "'", new Exception("info"));
+			myLogger.warn("Forbidden to overwrite a final job status '" + job.jobStatus + "' with '" + status + "'", new Exception("info"));
 			return false;
 		}
 		job.setStatus(status);