bpo-38688: News entry

Author: Bruno P. Kinoshita

Misc/NEWS.d/next/Library/2019-11-22-10-45-03.bpo-38668.iKx23z.rst

@@ -0,0 +1,5 @@
+Calling func:`shutil.copytree` to copy a directory tree from one directory
+to another subdirectory resulted in an endless loop and a RecursionError. A
+fix was added to consume an iterator and create the list of the entries to
+be copied, avoiding the recursion for newly created directories. Patch by
+Bruno P. Kinoshita.