Update notes in README.rst

Author: zware

README.rst

@@ -31,20 +31,21 @@ is an example for updating SQLite::
 
 6. Create the PR, with ``sqlite`` as the base branch.
 
-Once the PR has been merged, tag the commit as ``sqlite-<full version to be used in CPython's PCbuild/get_externals.bat>``.
+Once the PR has been merged, tag the commit as
+``sqlite-<full version to be used in CPython's PCbuild/get_externals.bat>``.
 
-For updating ``sqlite``, ``bzip2``, ``xz``, and ``zlib``, follow the above
-instructions.
+For updating each project to be updated, follow the above instructions with
+appropriate substitutions.  For ``sqlite``, ``bzip2``, ``xz``, and ``zlib``,
+that's it!
 
-For ``tcl`` and ``tk``, after step 5, `cpython-bin-deps
-<https://github.com/python/cpython-bin-deps/>`_
-needs to be updated.  Note though that ``tcl85`` and ``tk85`` are specific
-to 2.7 and don't require anything extra.
+For ``openssl``, ``tcl``/``tk``, and ``libffi``, builds of each should also be
+checked into `cpython-bin-deps <https://github.com/python/cpython-bin-deps/>`_
+for use in the CPython Windows build.  Each one has a ``prepare_<name>.bat``
+script in the ``cpython`` ``PCbuild`` directory that will take care of building
+the project.  Note, though, that builds checked into ``cpython-bin-deps`` need
+to be signed by the release signing key, so it is generally up to a member of
+the release management team to create those builds.
 
-For ``openssl``, step 5 will be more complicated :)
-
-For ``libffi``, before step 5 each include/<arch>/fficonfig.h and 
-include/<arch>/ffi.h must be generated by running CPython's PCBuild/configure_headers.bat.
 
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