fix calendar serialization issue
fix calendar serialization issue

vThinkBeyondVM/yavijava-samples,michaelrice/yavijava,n4ybn/yavijava,vmware-serengeti/yavijava-samples,hubertverstraete/yavijava,yavijava/yavijava-samples,vmware-serengeti/yavijava-samples,yavijava/yavijava,yavijava/yavijava-samples,omar-infinio/yavijava