SERVER-15657 remove redundant unittest builds from SConscript
Fix restart issue with rocks engine

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
rocksdb - string, not Slice
SERVER-15527 add more execution stats to explain
SERVER-15662 temporarily disable HBReconfigDuringReconfigFails
SERVER-15535 When using replSetFreeze to end a stepDown period, make sure single node replsets become PRIMARY again
SERVER-15535 Clear sharding state on stepdown
SERVER-15535 Rename sharding_state_after_reconfig.js to sharding_state_after_stepdown.js
SERVER-15535 Ensure that a node in a single node replica set will become PRIMARY when its stepdown period ends
SERVER-15527 OpCtx no longer needs to be passed into explainStages
SERVER-15528 Refactor DistinctScan to do less in each work() call
Merge remote-tracking branch 'upstream/master'