SERVER-8254: load new js helpers from spidermonkey
SERVER-8117: listDatabases - config/admin db should come from config servers
SERVER-7122 Grant killCursors to serverAdmin role
SERVER-7122 Grant cloneCollectionLocalSource (used by renameCollection) to dbAdmin role
SERVER-7122 Change replica set commands to be part of clusterAdmin, not serverAdmin role
SERVER-7423 more thorough testing of commands and read preferences on mongos
Make connections_opened.js more reliable
Increase stability of jstests/repl/repl12.js when run with auth
Fix incorrect range test
SERVER-8060: MinKey/MaxKey fixes for V8
Further stability improvement to connections_opened.js test. SERVER-8249
SERVER-7122 SERVER-8283 Merge serverAdmin role into clusterAdmin
Try to make jstests/replsets/sync2.js more robust and add logging
Support mongobridge delay parameter in ReplSetBridge

This should be compatible with future improvements to support ranged delays (see #317)
Support unidirectional network partitioning in ReplSetTest

The default behavior (bidirectional) remains as-is. This adds support for terminating an X->Y link while leaving Y->X untouched.
JS tests for replica set flapping and heartbeatTimeoutSecs