import list_stable_unreleased_changes.sh from release-tools

Change-Id: Ibef585f5a6fb427a073fe069ab47db992a80f120
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

README.rst

@@ -532,3 +532,21 @@ tools/list_library_unreleased_changes.sh
 
 Runs list_unreleased_changes.sh for all libraries managed by any
 project.
+
+list_stable_unreleased_changes.sh
+---------------------------------
+
+Runs list_unreleased_changes.sh with the given branch for all
+repositories tagged with ``stable:follows-policy``.
+
+
+::
+
+  ./list_stable_unreleased_changes.sh stable/liberty
+
+
+is equivalent to:
+
+::
+
+  ./list_unreleased_changes.sh stable/liberty $(list-deliverables --repos --series liberty)

tools/list_stable_unreleased_changes.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+#
+# Convenience wrapper to show the unreleased changes in all projects
+# claiming to have stable branches, so we don't have to remember the
+# incantation.
+
+if [[ $# -ne 1 ]]; then
+    echo "Usage: $(basename $0) <series>"
+    exit 1
+fi
+
+SERIES=${1}
+
+TOOLSDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+BASEDIR=$(dirname $TOOLSDIR)
+source $TOOLSDIR/functions
+
+# Set up the virtualenv where the list-deliverables command will be
+# found. This is done outside of the invocation below because
+# otherwise we get the tox output mixed up in the repo list output and
+# try to do things like look at the history of "venv" and
+# "installing".
+if [[ -z "$VIRTUAL_ENV" ]]; then
+    if [[ ! -d $BASEDIR/.tox/venv ]]; then
+        (cd $BASEDIR && tox -e venv --notest)
+    fi
+    source $BASEDIR/.tox/venv/bin/activate
+fi
+
+repos="$(list-deliverables --repos --tag stable:follows-policy --series $SERIES)"
+
+$TOOLSDIR/list_unreleased_changes.sh stable/$SERIES $repos