docs: Create stub system manual

We want a user-facing manual which contains system emulation
documentation. Create an empty one which we can populate.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20200116141511.16849-3-peter.maydell@linaro.org

docs/system/conf.py

@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+#
+# QEMU documentation build configuration file for the 'system' manual.
+#
+# This includes the top level conf file and then makes any necessary tweaks.
+import sys
+import os
+
+qemu_docdir = os.path.abspath("..")
+parent_config = os.path.join(qemu_docdir, "conf.py")
+exec(compile(open(parent_config, "rb").read(), parent_config, 'exec'))
+
+# This slightly misuses the 'description', but is the best way to get
+# the manual title to appear in the sidebar.
+html_theme_options['description'] = u'System Emulation User''s Guide'

docs/system/index.rst

@@ -0,0 +1,16 @@
+.. This is the top level page for the 'system' manual.
+
+
+QEMU System Emulation User's Guide
+==================================
+
+This manual is the overall guide for users using QEMU
+for full system emulation (as opposed to user-mode emulation).
+This includes working with hypervisors such as KVM, Xen, Hax
+or Hypervisor.Framework.
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+