added shutdown hook for proper cleanup
added shutdown hook for proper cleanup

danberindei/JGroups,pferraro/JGroups,ibrahimshbat/JGroups,TarantulaTechnology/JGroups,rvansa/JGroups,deepnarsay/JGroups,danberindei/JGroups,ibrahimshbat/JGroups,rvansa/JGroups,danberindei/JGroups,tristantarrant/JGroups,tristantarrant/JGroups,dimbleby/JGroups,pferraro/JGroups,vjuranek/JGroups,rpelisse/JGroups,pruivo/JGroups,ligzy/JGroups,Sanne/JGroups,pruivo/JGroups,ibrahimshbat/JGroups,pferraro/JGroups,deepnarsay/JGroups,dimbleby/JGroups,vjuranek/JGroups,dimbleby/JGroups,belaban/JGroups,rhusar/JGroups,rpelisse/JGroups,ligzy/JGroups,TarantulaTechnology/JGroups,Sanne/JGroups,TarantulaTechnology/JGroups,kedzie/JGroups,ibrahimshbat/JGroups,rhusar/JGroups,belaban/JGroups,deepnarsay/JGroups,kedzie/JGroups,slaskawi/JGroups,belaban/JGroups,ligzy/JGroups,Sanne/JGroups,pruivo/JGroups,kedzie/JGroups,rhusar/JGroups,slaskawi/JGroups,slaskawi/JGroups,rpelisse/JGroups,vjuranek/JGroups