when cleaning up TCollection, make sure we are owner
when cleaning up TCollection, make sure we are owner

this way we delete also the contents, this does not work recursively!

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