JGRP-2428 Add message size to TP::down trace log
JGRP-2428 Add message size to TP::down trace log

pferraro/JGroups,rhusar/JGroups,belaban/JGroups,rhusar/JGroups,pferraro/JGroups,belaban/JGroups,belaban/JGroups,rhusar/JGroups,pferraro/JGroups