Fix VEM JMX/RMI connection issue
gc rollover settings in VEM, ENG-4417
fixed mixed lines
For ENG-4513, use global service elector to notify export of new nodes, remove uneccessary ZKUtil.sortSequentialNodes
Remove legacy RestrictedPriorityQueue (not the one used by
AgreementSite).
With RPQ gone, RPQInterface is also unnecessary.
In IV2, SiteMailbox no longer needs to know about the command log.
Also, clean up some stale imports.
Get rid of unused logHeartbeat method on CommandLog.
Hey, look, we don't log old-style legacy faults anymore, either.
IV2 command logging doesn't have or care about the fault sequence
number.
Merge branch 'master' into ENG-4487
Merge branch 'master' into ENG-4513
ENG-4338: WIP commit on faster catalog updates
This has most of the lazy plan loading code, but is missing a few things
Needs cache eviction and doesn't pass 100% of tests.
Merge pull request #439 from VoltDB/rpqpurge

Remove legacy command logging code
Legacy DTXN purge: delete unused-in-IV2
MultiPartitionParticipantTxnState, propogate consequences.
Legacy DTXN purge: Delete RecoveringSinglePartitionTxnState, which was
apparently not even used by legacy DTXN.
Legacy DTXN purge: Remove unused-by-IV2 SinglePartitionTxnState
For ENG-4513, fix what may be a longstanding race between leader elector and shutdown it tests.
Legacy DTXN purge: Remove unused-by-IV2 ReplayedTxnState and junit
test.
Legacy DTXN purge: Remove unused SimpleDtxnInitiator.  All of its
threads were hacked off in an elastic-motivated commit set earlier.