[3.6] bpo-28787: Fix out of tree --with-dtrace builds (GH-135) (#1543)

* bpo-28787: Fix out of tree --with-dtrace builds

* Unsilence directory creation

* Add Misc/NEWS and Misc/ACKS entries.
(cherry picked from commit f6eae5bf1c5d7b83e5d5bdbecfff928e478c1cfd)
3 files changed