Partially-working new instructions for running the tests.

The functional tests don't even try to run, but at least this
exercises 6724 of the unit tests.

Someone who understands how Zope3 testing was changed to work
from a zpkgtools-based install should be able to figure out
how to improve this.

inst/WinBuilders/README.txt

@@ -110,21 +110,44 @@ now required, or the files you've downloaded are not in 'tmp'.
 Testing Zope
 ------------
 
-The test suite can be run from inst\build\:
+XXX This doesn't work right starting with Zope 2.9:  it's clumsier than it
+XXX should be, and the functional tests don't even try to run (just the
+XXX unit tests).
+XXX Someone who understands how Zope3 testing from a zpkgtools-tarball build
+XXX was made to work again may be able to help here.
+
+The test suite can be run from inst\build\, after building the installer.
 
 - Open a native (not Cygwin) DOS box.  We want to test with the Python the
-  Zope installer includes.
-- cd to inst\build
-- Copy log.ini from the root of the Zope checkout.  This isn't necessary for
-  the tests to pass, but if you don't do it a great many spurious log
-  messages will be displayed on the console, some of which "look like"
-  errors (some of the tests deliberately provoke errors).
-- Enter
+  Zope installer includes, in an all-native environment, to match what
+  the installer-installed code will do as closely as possible.
+
+- cd inst\build
+
+- Copy log.ini from the root of the Zope _checkout_ -- it's not included
+  in the tarball::
+
+      copy ..\..\log.ini .
+
+  Copying log.ini isn't necessary for the tests to pass, but if you don't
+  do it a great many spurious log messages will be displayed on the
+  console, some of which "look like" errors (some of the tests deliberately
+  provoke errors).
 
-      bin\python bin\test.py -v --all
+- Copy test.py from the unpacked tarball::
+
+      copy ..\src\$(ZOPE_VERSION)\test.py .
+
+- Enter::
+
+      bin\python test.py -vv -m "!^zope[.]app[.]" --all
 
   or whatever variation you like best.  All tests should pass.
 
+  Note that zope.app tests should be excluded because not all of them _can_
+  pass (this isn't "a Windows thing", it's a temporary all-platform wart
+  due to missing bits from Zope3).
+
 Also run the Windows installer, and play with the Zope it installs.