Backport the distutils part of r83399 to fix #7645.

Misc/NEWS

@@ -29,6 +29,8 @@ Library
 Build
 -----
 
+- Backport r83399 to allow test_distutils to pass on installed versions.
+
 - Issue #1303434: Generate ZIP file containing all PDBs.
 
 Tests

Tools/msi/msi.py

@@ -1020,6 +1020,8 @@ def add_files(db):
             lib.glob("*.pem")
             lib.glob("*.pck")
             lib.add_file("zipdir.zip")
+        if dir=='tests' and parent.physical=='distutils':
+            lib.add_file("Setup.sample")
         if dir=='decimaltestdata':
             lib.glob("*.decTest")
         if dir=='xmltestdata':