Windows installer:  disabled Wise's "delete in-use files" uninstall
option.  It was the cause of at least one way UNWISE.EXE could vanish
(install a python; uninstall it; install it again; reboot the machine;
abracadabra the uinstaller is gone).

Bugfix candidate, but I'll backport it myself.
diff --git a/Misc/NEWS b/Misc/NEWS
index a1f5f54..35d7248 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -184,6 +184,10 @@
 
 Windows
 
+- Sometimes the uninstall executable (UNWISE.EXE) vanishes.  One cause
+  of that has been fixed in the installer (disabled Wise's "delete in-
+  use files" uninstall option).
+
 - Fixed a bug in urllib's proxy handling in Windows.  [SF bug #503031]
 
 - The installer now installs Start menu shortcuts under (the local