SERVER-13635: add a key/value -> storage engine interface to simplify other work
SERVER-14805: log oplog application progress during initial sync
SERVER-15446: handle ok:0 and unauth heartbeat responses
SERVER-15480 Comment out CursorPointsToSamePlaceRegardlessOfDirection.

This test fails on OS X 10.8 C++11 DEBUG due to an invalid static
cast in both Heap1BtreeImpl::ForwardCursor::pointsToSamePlaceAs and
Heap1BtreeImpl::ReverseCursor::pointsToSamePlaceAs.

Closes #811

Signed-off-by: Benety Goh <benety@mongodb.com>
SERVER-15525 Disallow specifying both inline and sharded in MapReduce out options