[VOL-5009] - Create a v2.12 release notes page.

overview/releases.rst
release_notes/index.rst
release_notes/voltha_2.12.rst
-----------------------------
  o Create a skeleton release notes area for v2.12

Change-Id: Ia74075131326e0254af236d9c9edbdf8f46fa430
diff --git a/makefiles/targets/test-errors.mk b/makefiles/targets/test-errors.mk
new file mode 100644
index 0000000..548da7f
--- /dev/null
+++ b/makefiles/targets/test-errors.mk
@@ -0,0 +1,65 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# 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.
+#
+# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+## -----------------------------------------------------------------------
+## Intent: Summary 'make test' to hilight errors
+## -----------------------------------------------------------------------
+test-errors-lint := test-errors.lint.log
+test-errors-link := test-errors.linkcheck.log
+test-errors:
+	@echo "** Running $(MAKE) sterile"
+	$(HIDE)( $(MAKE) sterile 3>&1 2>&1 ) >/dev/null
+
+	@echo
+	@echo "** Running $(MAKE) lint"
+	-$(HIDE) ( $(MAKE) lint 3>&1 2>&1 ) > $(test-errors-lint)
+
+	@echo '** Screen log for errors: $(test-errors-lint)'
+	$(HIDE)! grep \
+	  -e 'make: ***' \
+	  $(test-errors-lint)
+
+	@echo
+	@echo "** Running $(MAKE) linkcheck"
+	-$(HIDE) ( $(MAKE) linkcheck 3>&1 2>&1 ) > $(test-errors-link)
+
+	@echo '** Screen log for errors: $(test-errors-link)'
+	$(HIDE)! grep \
+	  -e 'make: ***' \
+	  -e 'broken'    \
+	 $(test-errors-link)
+
+## -----------------------------------------------------------------------
+## Intent: Remove generated logfiles
+## -----------------------------------------------------------------------
+clean ::
+	$(RM) $(test-errors-lint) $(test-errors-link)
+
+## -----------------------------------------------------------------------
+## Intent: Display target help
+## -----------------------------------------------------------------------
+help ::
+	@echo '  test-errors    Run make test and display an error summary'
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]