SERVER-11908: let rollback handle collmod
SERVER-11194 ignore non-numeric expiresAfterSeconds on TTL indexes
SERVER-10919 logging in ~ReplicaSetsMonitor crashes
SERVER-9238 Don't set a timeout in shell autocomplete

In V8, timeouts are fatal so the shell would become unusable if the
timeout fired. Since the timeout didn't cause remote calls to return
early (which is the most common cause of slow autocomplete), this didn't
actually do anything useful anyway.
Merge remote-tracking branch 'upstream/v2.4' into v2.4