BabuDB/Java/replication: Implementations of LifeCycleThread catch Throwable instead of Exception

now and pass it to notifyCrashed(), which was updated in XtreemFS revision 3149 (see http://code.google.com/p/xtreemfs/source/detail?r=3149).

git-svn-id: https://babudb.googlecode.com/svn/trunk@610 d4c7dd96-b7b2-11dd-893d-d98698f66bbf