SERVER-11415 Shell aggregate() helper now supports old servers
SERVER-11525 Better error message on oversized BSON in JS
SERVER-6950 Add a TCMalloc ServerStatusSection
Stop using RARELY macro in ExpressionContext::checkForInterrupt()

Using a member variable instead to prevent interference from other pipelines running in parallel.
Pipeline::parseCommand doesn't need non-const BSONObj ref
SERVER-10834 Remove stubbed-out code from Pipeline::addRequiredPrivileges
SERVER-11539 Don't count sizeof metadata when deciding if a string is too big in agg
SERVER-10868 add --tempPath parameter to unittests and dbtests
SERVER-10868 Add --temp-path parameter to smoke.py
SERVER-11663 Make sharded agg upgrade test more resilient by explicitly placing data on shards
SERVER-11667 Fix typo in text command error message
SERVER-9932 SERVER-10857 Text search language aliases/validation

Users can now use two-letter language codes and can specify
languages in mixed case.

The following operations will now fail if they do not pass language
validation:

- Building a text index (if default_language fails validation or if
  the target collection contains a document with a language that
  fails validation).
- Inserting a document into a text-indexed collection (if it
  specifies a language that fails validation).
- A text query or text command (if it specifies a language that
  fails validation).
SERVER-10818 use separate write execution path for config server batch writes
SERVER-11676 buildbot change limit in writeback_bulk_insert.js
SERVER-10026 don't scan an idx to provide sort when there's a text node
SERVER-9516 Acquire auth update lock in upgrade command, not in upgradeSchemaStep() method.
SERVER-9516 User objects must be immutable after first returned from AuthManager.

The mechanism for probing schemaVersion24 users was not respecting this requirement
before this patch, which would have led to concurrency errors.

Also, with this change the internalSecurity.user is never stored in the cache, and
its reference count is never altered.
SERVER-9516 Add location codes to fasserts.
SERVER-11672 Eliminate unused and erroneous testing code from AuthzExternalStateMock.
SERVER-10818 send shardName and version with every batch write request