added test for clear()
added test for clear()

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