made backlog configurable, set default to 1000 (https://jira.jboss.org/jira/browse/JGRP-861)
made backlog configurable, set default to 1000 (https://jira.jboss.org/jira/browse/JGRP-861)

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