Various component upgrades, and a critical issue with JGroups backends

HSEARCH-1532 should be backported to branches 4.4 and 4.5 too

 - https://hibernate.atlassian.net/browse/HSEARCH-1530
 - https://hibernate.atlassian.net/browse/HSEARCH-1531
 - https://hibernate.atlassian.net/browse/HSEARCH-1532