SERVER-15604 log component kControl
Revert "SERVER-15662 Reenable test that used to fail due to race condition."

This reverts commit a3dd680c584ff19272a6e3b70fd4a308c6e8238a.
SERVER-15527 change explain index bounds format from verbose string format to BSON format
query comment cleanup
SERVER-1153 Create heap1_engine_test unittest
SERVER-13635 Fix KVStorageEngine::dropDatabase
Merge branch 'master' into wt_merge