diff --git a/openstack-common.conf b/openstack-common.conf
index 930c2dcd3a..976c907959 100644
--- a/openstack-common.conf
+++ b/openstack-common.conf
@@ -1,5 +1,5 @@
 [DEFAULT]
-modules=setup, jsonutils, xmlutils, timeutils, exception, gettextutils, log, local, notifier/api, notifier/log_notifier, notifier/no_op_notifier, notifier/test_notifier, notifier/__init__, importutils, context
+modules=setup, jsonutils, xmlutils, timeutils, exception, gettextutils, log, local, notifier/api, notifier/log_notifier, notifier/no_op_notifier, notifier/test_notifier, notifier/__init__, importutils, context, uuidutils
 base=savanna
 
 # The following code from 'wsgi' is needed:
diff --git a/savanna/openstack/common/gettextutils.py b/savanna/openstack/common/gettextutils.py
index e348a8ebfc..8e9bb89412 100644
--- a/savanna/openstack/common/gettextutils.py
+++ b/savanna/openstack/common/gettextutils.py
@@ -26,7 +26,7 @@ Usual usage in an openstack.common module:
 import gettext
 
 
-t = gettext.translation('openstack-common', 'locale', fallback=True)
+t = gettext.translation('savanna', 'locale', fallback=True)
 
 
 def _(msg):
diff --git a/savanna/openstack/common/log.py b/savanna/openstack/common/log.py
index e7c19f3b92..70fdb78348 100644
--- a/savanna/openstack/common/log.py
+++ b/savanna/openstack/common/log.py
@@ -29,6 +29,7 @@ It also allows setting of formatting information through conf.
 
 """
 
+import ConfigParser
 import cStringIO
 import inspect
 import itertools
@@ -87,11 +88,11 @@ logging_cli_opts = [
                metavar='PATH',
                deprecated_name='logfile',
                help='(Optional) Name of log file to output to. '
-                    'If not set, logging will go to stdout.'),
+                    'If no default is set, logging will go to stdout.'),
     cfg.StrOpt('log-dir',
                deprecated_name='logdir',
-               help='(Optional) The directory to keep log files in '
-                    '(will be prepended to --log-file)'),
+               help='(Optional) The base directory used for relative '
+                    '--log-file paths'),
     cfg.BoolOpt('use-syslog',
                 default=False,
                 help='Use syslog for logging.'),
@@ -111,9 +112,9 @@ generic_log_opts = [
 
 log_opts = [
     cfg.StrOpt('logging_context_format_string',
-               default='%(asctime)s.%(msecs)03d %(levelname)s %(name)s '
-                       '[%(request_id)s %(user)s %(tenant)s] %(instance)s'
-                       '%(message)s',
+               default='%(asctime)s.%(msecs)03d %(process)d %(levelname)s '
+                       '%(name)s [%(request_id)s %(user)s %(tenant)s] '
+                       '%(instance)s%(message)s',
                help='format string to use for log messages with context'),
     cfg.StrOpt('logging_default_format_string',
                default='%(asctime)s.%(msecs)03d %(process)d %(levelname)s '
@@ -323,10 +324,30 @@ def _create_logging_excepthook(product_name):
     return logging_excepthook
 
 
+class LogConfigError(Exception):
+
+    message = _('Error loading logging config %(log_config)s: %(err_msg)s')
+
+    def __init__(self, log_config, err_msg):
+        self.log_config = log_config
+        self.err_msg = err_msg
+
+    def __str__(self):
+        return self.message % dict(log_config=self.log_config,
+                                   err_msg=self.err_msg)
+
+
+def _load_log_config(log_config):
+    try:
+        logging.config.fileConfig(log_config)
+    except ConfigParser.Error, exc:
+        raise LogConfigError(log_config, str(exc))
+
+
 def setup(product_name):
     """Setup logging."""
     if CONF.log_config:
-        logging.config.fileConfig(CONF.log_config)
+        _load_log_config(CONF.log_config)
     else:
         _setup_logging_from_conf()
     sys.excepthook = _create_logging_excepthook(product_name)
diff --git a/savanna/openstack/common/notifier/api.py b/savanna/openstack/common/notifier/api.py
index 4ac176ac55..519c956a73 100644
--- a/savanna/openstack/common/notifier/api.py
+++ b/savanna/openstack/common/notifier/api.py
@@ -30,7 +30,6 @@ LOG = logging.getLogger(__name__)
 notifier_opts = [
     cfg.MultiStrOpt('notification_driver',
                     default=[],
-                    deprecated_name='list_notifier_drivers',
                     help='Driver or drivers to handle sending notifications'),
     cfg.StrOpt('default_notification_level',
                default='INFO',
diff --git a/savanna/openstack/common/setup.py b/savanna/openstack/common/setup.py
index 030df61c99..ba6b54aff4 100644
--- a/savanna/openstack/common/setup.py
+++ b/savanna/openstack/common/setup.py
@@ -171,6 +171,14 @@ def generate_authors():
                            " log --format='%aN <%aE>' | sort -u | "
                            "egrep -v '" + jenkins_email + "'")
             changelog = _run_shell_command(git_log_cmd)
+            signed_cmd = ("git --git-dir=" + git_dir +
+                          " log | grep -i Co-authored-by: | sort -u")
+            signed_entries = _run_shell_command(signed_cmd)
+            if signed_entries:
+                new_entries = "\n".join(
+                    [signed.split(":", 1)[1].strip()
+                     for signed in signed_entries.split("\n") if signed])
+                changelog = "\n".join((changelog, new_entries))
             mailmap = _parse_git_mailmap(git_dir)
             with open(new_authors, 'w') as new_authors_fh:
                 new_authors_fh.write(canonicalize_emails(changelog, mailmap))
diff --git a/savanna/openstack/common/uuidutils.py b/savanna/openstack/common/uuidutils.py
new file mode 100644
index 0000000000..7608acb942
--- /dev/null
+++ b/savanna/openstack/common/uuidutils.py
@@ -0,0 +1,39 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright (c) 2012 Intel Corporation.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""
+UUID related utilities and helper functions.
+"""
+
+import uuid
+
+
+def generate_uuid():
+    return str(uuid.uuid4())
+
+
+def is_uuid_like(val):
+    """Returns validation of a value as a UUID.
+
+    For our purposes, a UUID is a canonical form string:
+    aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+
+    """
+    try:
+        return str(uuid.UUID(val)) == val
+    except (TypeError, ValueError, AttributeError):
+        return False
diff --git a/savanna/openstack/common/xmlutils.py b/savanna/openstack/common/xmlutils.py
index 33700485bc..b131d3e2e9 100644
--- a/savanna/openstack/common/xmlutils.py
+++ b/savanna/openstack/common/xmlutils.py
@@ -1,6 +1,6 @@
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 
-# Copyright 2013 IBM
+# Copyright 2013 IBM Corp.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
 #    not use this file except in compliance with the License. You may obtain