SERVER-15012 SubplanStage must check for missing cache data
SERVER-15041 detect StepDownPeriodActive properly
SERVER-15040 initialize our own HeartbeatMemberData when updating config in the TopologyCoordinator
SERVER-14668 Remove d_globals.h/.cpp

They were only used for ClientCursorMonitor startup, so I moved this to be
a singleton task.
SERVER-14413 Fix warnings inside MMAPV1 metadata operations
SERVER-14668 Fix for commit c069fc13a9 which broke OSX build
SERVER-15007 Add epoch check for split and moveChunk
SERVER-14561 Make getStatusFromCommandResult a free function supplied by mongo/db/common.

It was formerly a static member function on the Command class, which made it hard to link
into unit-testable code.
SERVER-15056 Sharded connection cleanup on setup error can crash mongos
SERVER-14981 don't generate cell ids > coarsestIndexedLevel when building covering
SERVER-14413 don't forget to link in heap1 registration, update rocks initializer

This reverts commit afbdd2b7f5944b57d5fd1f597f67aa32883043ba.
SERVER-4217 use hyphen to display default component in log message
SERVER-14561 Add validateConfigForHeartbeatReconfig free function.

This function is analagous to validateConfigForInitiate and others in the same file,
and provides the validation required for heartbeat-prompted reconfigurations.
SERVER-14561 Remove ReplicationExecutor::CallbackData argument from methods that aren't callbacks.

TopologyCoordinator::updateConfig and ReplicationCoordinatorImpl::_setCurrentRSConfig_inlock are
not scheduled direclty as callbacks, and so do not need a cbData argument.
SERVER-14561 Add OperationContext* member to ReplicationExecutor::CallbackData.

This member, called txn, is non-NULL if the operation was scheduled using
scheduleWorkWithGlobalExclusiveLock, and provides a pointer to the lock-owning
context.
SERVER-14455 Implement processReplSetElect in ReplicationCoordinatorImpl
SERVER-7596 Native SCRAM-SHA-1 server side support
SERVER-7596 Fixed error number
SERVER-15045 extend logComponentVerbosity to support less verbose BSON format for log component severity
SERVER-14561 Parsing and accessor methods for ReplSetHeartbeatResponse.