SERVER-11586 Implement support for WriteCommands in benchRun and
make it the default. WriteCommands are acknowledged, they don't
require getLastError() calls and make the sync timing issues going
away.
SERVER-10026 return ixisect server param
SERVER-11144 Removed unnecessary tests of option implementation details
improve slowWeekly/rollback4.js
SERVER-11586 Default to the old behaviour (write ops) until jstests
are not fixed.
add mongoadmin to gitignore
SERVER-12438 avoid unindexed sort if batch size is set
SERVER-12493 Remove privileges on "admin.mms.backup" collection from the "backup" role.

It was originally added to support the backup service agent, but they no longer need it.
SERVER-12404 don't double report null err field, don't suppress err in sharded gle
SERVER-4966: Renable tests for Windows
SERVER-12013: Do not ship C++ driver binary on Windows.
Merge remote-tracking branch 'upstream/master'