SERVER-15560 Multiple logComponentVerbosity levels cannot be cleared
SERVER-15535 initialize logOp at the appropriate time
SERVER-15535 record replset state transitions
SERVER-15535 signal draining when op queue is initially empty
SERVER-15535 default version to 1 for replicaset initiate
SERVER-15535 abort if primary during op application
Merge remote-tracking branch 'upstream/master'