SERVER-15947 Prevent starting a 2.8 server with 2.4 auth indexes
SERVER-16020: Suppress non-applicable profiling data when using WT
SERVER-16025: Enable Ulimit Warning for Linux
Revert "SERVER-5957: record oplog msg when primary"

This reverts commit 44461e50ac7124b76564a400948ed7b9173504b4.
Merge remote-tracking branch 'upstream/master'