Safely handle AliMergeable objects which don't implement unpacking
Safely handle AliMergeable objects which don't implement unpacking

sebaleh/AliRoot,alisw/AliRoot,coppedis/AliRoot,coppedis/AliRoot,miranov25/AliRoot,sebaleh/AliRoot,alisw/AliRoot,coppedis/AliRoot,miranov25/AliRoot,sebaleh/AliRoot,alisw/AliRoot,ALICEHLT/AliRoot,alisw/AliRoot,ALICEHLT/AliRoot,ALICEHLT/AliRoot,shahor02/AliRoot,miranov25/AliRoot,ALICEHLT/AliRoot,miranov25/AliRoot,coppedis/AliRoot,coppedis/AliRoot,alisw/AliRoot,sebaleh/AliRoot,miranov25/AliRoot,coppedis/AliRoot,coppedis/AliRoot,shahor02/AliRoot,coppedis/AliRoot,shahor02/AliRoot,miranov25/AliRoot,ALICEHLT/AliRoot,shahor02/AliRoot,alisw/AliRoot,sebaleh/AliRoot,shahor02/AliRoot,miranov25/AliRoot,shahor02/AliRoot,sebaleh/AliRoot,alisw/AliRoot,alisw/AliRoot,sebaleh/AliRoot,ALICEHLT/AliRoot,ALICEHLT/AliRoot,shahor02/AliRoot,miranov25/AliRoot