SERVER-13962 add generated snappy-stubs-public.h and SCons configuration (including C API) for snappy-1.1.2
SERVER-15527 change default explain verbosity on the server to allPlansExecution
SERVER-13635 Clean up KVCatalog ident generation

No longer includes index name since that was running in to file path limits.
Also now checks that the selection of _rand won't collide with any existing
idents.
SERVER-13962 fixed snappy-1.1.2 windows build
SERVER-13962 upgrade snappy from 1.03 to 1.1.2
SERVER-11103 test that fsyncLocked secondaries will still participate in elections
SERVER-15844 improve TopologyCoordinator unittest coverage
SERVER-15742 Coverity analysis defect 24463: Unchecked return value
SERVER-13962 prefer memcpy to undefined reinterpret_cast for UNALIGNED_LOAD/STORE functions
SERVER-15492 do not swallow errors from subclasses' run() methods in BackgroundJob
SERVER-15780 improve thread naming, remove any hex identifiers from names
SERVER-15836 Change how long we wait for the master in rollback4.js.

In the legacy implementation of replication, the newly elected node waits for
queued oplog entries to drain before transitioning to primary.  In the new
implementation, it transitions immediately, but does not report "ismaster: true"
until the drain completes.
SERVER-15590 remove unneeded minor version tracking from heuristics
SERVER-15590 dead ShardConnection::runCommand code
SERVER-15531 serverID for WBL no longer used
SERVER-15262 Chunk migration should yield the MMAP V1 flush lock
SERVER-15780 use namespace stdx not std for bind
SERVER-15780 use namespace stdx not std for bind pt2
BF-615: Use smaller doc size in mmap test on 32-bit
SERVER-15262 Very long lock acquisitions should put warning in the log