added wait after shutdownNow() to wait for all threads to complete
added wait after shutdownNow() to wait for all threads to complete

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