Overhaul docs for Windows filemon install

sheesh, hopefully this is "most" of it..although definitely still not
all we need yet..

docs/base/install/windows/filemon/config/variations.rst

@@ -0,0 +1,35 @@
+
+.. highlight:: ini
+
+==================
+ Other Approaches
+==================
+
+Here are some variations on the config theme which you may find
+useful.
+
+
+Leveraging Site-Wide Config
+===========================
+
+It is possible to maintain a single "site-wide" config file, which
+your "machine-wide" config inherits from (see :ref:`site-wide-config`
+and :ref:`config-inheritance`).
+
+If you do this, it usually means that your Linux server is running
+Samba and exposing a share which includes the site-wide config
+file(s).  We will assume that scenario here, but we assume that part
+is already setup - it will not be described.
+
+So let's assume then that you have a Linux server named
+``poser-server`` and it exposes a ``rattail`` share, with a ``config``
+folder and ``site.conf`` within that.  So then in your machine-wide
+config on the Windows side, you include it by adding this to
+``C:\ProgramData\rattail\rattail.conf``::
+
+   [rattail.config]
+   include = \\poser-server\rattail\config\site.conf
+
+If you do this then you can also *remove* (most) anything from your
+machine-wide config file, which is also defined in the site-wide
+config file.