Backport of r66722: Use CRT 9 policy files.

Tools/msi/merge.py

@@ -9,10 +9,10 @@ msi = None
 if len(sys.argv)==2:
     msi = sys.argv[1]
 if Win64:
-    modules = ["Microsoft_VC90_CRT_x86_x64.msm", "policy_8_0_Microsoft_VC80_CRT_x86_x64.msm"]
+    modules = ["Microsoft_VC90_CRT_x86_x64.msm", "policy_9_0_Microsoft_VC90_CRT_x86_x64.msm"]
     if not msi: msi = "python-%s.amd64.msi" % full_current_version
 else:
-    modules = ["Microsoft_VC90_CRT_x86.msm","policy_8_0_Microsoft_VC80_CRT_x86.msm"]
+    modules = ["Microsoft_VC90_CRT_x86.msm","policy_9_0_Microsoft_VC90_CRT_x86.msm"]
     if not msi: msi = "python-%s.msi" % full_current_version
 for i, n in enumerate(modules):
     modules[i] = os.path.join(mod_dir, n)