Warn instead of crashing because of invalid path in MANIFEST.in (#8286).
sdist used to crash with a full traceback dump instead of printing a
nice warning with the faulty line number.
diff --git a/Misc/NEWS b/Misc/NEWS
index c74cb55..f9eb1cd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -28,6 +28,9 @@
Library
-------
+- Issue #8286: The distutils command sdist will print a warning message instead
+ of crashing when an invalid path is given in the manifest template.
+
- Issue #12636: IDLE reads the coding cookie when executing a Python script.
- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi