bpo-32102 Add "capture_output=True" to subprocess.run (GH-5149)

Add "capture_output=True" option to subprocess.run, this is equivalent to
setting stdout=PIPE, stderr=PIPE but is much more readable.
diff --git a/Misc/ACKS b/Misc/ACKS
index bfcdd33..3fdfa30 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -108,6 +108,7 @@
 Anthony Baxter
 Mike Bayer
 Samuel L. Bayer
+Bo Bayles
 Tommy Beadle
 Donald Beaudry
 David Beazley
diff --git a/Misc/NEWS.d/next/Library/2018-01-10-18-04-21.bpo-32102.9-CZgD.rst b/Misc/NEWS.d/next/Library/2018-01-10-18-04-21.bpo-32102.9-CZgD.rst
new file mode 100644
index 0000000..cd4d0b5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-01-10-18-04-21.bpo-32102.9-CZgD.rst
@@ -0,0 +1 @@
+New argument ``capture_output`` for subprocess.run