SERVER-7533 add _replMonitorStats() to get status from a ReplSetMonitor
SERVER-7533 added an _awaitRSHostViaRSMonitor method based on _replMonitorStats

updated jstests/sharding/read_pref_cmd.js to use this new method
SERVER-10026 enumeration as strategies, bug fixes galore, build plans
SERVER-4868: Record more in changelog

Added new changelog entries for movePrimary, addShard, shardCollection, removeShard
Added more info to moveChunk entry
SERVER-10726 Suppress warnings in build of internal v8
SERVER-10401 Disable new clang-3.4 warning
SERVER-6405: move all extent freelist mgmt into ExtentManager
SERVER-6405: remove old ClientCursor test never used
SERVER-6405: move dropCollection into Database