Introduce 'untargeted' specs

This commit adds an 'untargeted' directory to hold orphaned specs
that were approved but aren't being worked on.  A new index.rst is
added explaining the idea, and adjustments are made to other
appropriate index pages.  Additionally, one glanceclient spec from
liberty was stuck in a non-release-name directory; it was moved to
the liberty directory, which in turn was slightly reorganized to
accommodate both glance and glanceclient specs.

Change-Id: I074fc782eca1c3e3c9a1c504501973300741b110

doc/source/index.rst

@@ -4,6 +4,22 @@
 Image Service (Glance) Plans
 ============================
 
+The Glance Project Team has the responsibility for maintaining the
+following projects:
+
+* Glance: https://git.openstack.org/cgit/openstack/glance
+* The glance_store library: https://git.openstack.org/cgit/openstack/glance_store
+* The Glance client: https://git.openstack.org/cgit/openstack/python-glanceclient
+
+This repository contains proposals for new features, or proposals for
+changes to the current projects that are sufficiently complicated or
+controversial that in-depth discussion is required.
+
+Please see the `Glance Contribution Guidelines`_ for information about how to
+make a proposal to this repository.
+
+.. _Glance Contribution Guidelines: https://docs.openstack.org/developer/glance/contributing/blueprints.html
+
 Priorities
 ==========
 
@@ -20,12 +36,11 @@ discussions:
 Specifications
 ==============
 
-Glance specs:
-
 .. toctree::
    :glob:
    :maxdepth: 1
 
+   specs/untargeted/*
    specs/juno/index
    specs/kilo/index
    specs/liberty/index
@@ -35,16 +50,6 @@ Glance specs:
    specs/pike/*
    specs/queens/*
 
-Client specs:
-
-.. toctree::
-   :glob:
-   :maxdepth: 1
-
-   specs/glanceclient/*
-
-
-
 ====================
 Image service V2 API
 ====================

specs/liberty/index.rst

@@ -2,9 +2,18 @@
  Liberty Specifications
 =======================
 
+Glance specs:
+
 .. toctree::
    :glob:
-   :maxdepth: 2
+   :maxdepth: 1
 
-   *
+   approved/*
 
+Glanceclient specs:
+
+.. toctree::
+   :glob:
+   :maxdepth: 1
+
+   glanceclient/*

specs/untargeted/index.rst

@@ -0,0 +1,43 @@
+=================================
+Utargeted Approved Specifications
+=================================
+
+The following specs have been reviewed and approved but have
+not been targeted for a release because the proposer is no longer
+available to work on the implementation.
+
+If you are interested in picking one of these up, please put an
+item on the agenda for the next convenient `Glance meeting`_ so
+that we can quickly discuss whether the spec is still relevant and
+also so that the Glance community is aware that you'd like to work
+on implementing one of these specs.
+
+.. _Glance meeting: https://etherpad.openstack.org/p/glance-team-meeting-agenda
+
+.. toctree::
+   :glob:
+   :maxdepth: 1
+
+.. Approved untargeted specs for Glance:
+
+.. .. toctree::
+..    :glob:
+..    :maxdepth: 1
+
+..    glance/*
+
+.. Approved untargeted specs for glance_store:
+
+.. .. toctree::
+..    :glob:
+..    :maxdepth: 1
+
+..    glance_store/*
+
+.. Approved untargeted specs for python-glanceclient:
+
+.. .. toctree::
+..    :glob:
+..    :maxdepth: 1
+
+..    python-glanceclient/*