Merge pull request #109 from pruivo/cloudtm/develop

Added toString() to TreeMapExternalization to make easy debugging the applications
Upgrade versions of Infinispan and JGroups

  * Infinispan 5.2.5-cloudtm.Final
  * JGroups 3.3.0.CR1
Remove __old-stuff-to-refactor
Bump version to 2.4-cloudtm-SNAPSHOT
Update Infinispan and JGroups configuration files
Merge pull request #134 from pruivo/config_update

Update Infinispan and JGroups configuration files

Modifications:

  * disable recovery in Infinispan (set by default in 5.2)
  * remove duplicate JGroups config file
  * update JGroups reliable protocols to NAKACK2 and UNICAST3
  * commenting TCPGOSSIP in jgroups-tcp.xml (used when IP-multicast is not
    available (e.g. amazon)) and setting MPING as default
  * minor updates in some values.