Update to reflect upstream repository 'https://github.com:nestlabs/nlbuild-autotools.git' branch 'master' at tag '1.6.3'.

Author: gerickson

third_party/nlbuild-autotools/repo/.default-version

@@ -1 +1 @@
-1.6.2
+1.6.3

third_party/nlbuild-autotools/repo/CHANGES

@@ -1,3 +1,8 @@
+1.6.3 (2018-10-19)
+
+        * Added support for coverage-local and check-local targets. Added
+          documentation for all coverage-related targets.
+
 1.6.2 (2018-10-09)
 
         * Take a different approach to version flapping against 'make

third_party/nlbuild-autotools/repo/automake/post/rules/coverage.am

@@ -1,4 +1,5 @@
 #
+#    Copyright 2018 Google LLC. All Rights Reserved.
 #    Copyright 2015-2016 Nest Labs Inc. All Rights Reserved.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License");
@@ -26,9 +27,40 @@
 #      invocations. The 'check-am' and '$(BUILT_SOURCES)' are the key
 #      automake-specific dependencies to ensure that happens.
 #
+#      This defines the following make targets:
+#
+#        coverage:
+#          Execute local and recursive coverage targets across the
+#          project sub-tree at the current invocation point.
+#
+#          This target is intended to be user-visibile and -invoked.
+#
+#        coverage-local:
+#          Execute local coverage targets at the current invocation point.
+#
+#          This target is intended to be user-visibile and -invoked.
+#
+#        coverage-recursive:
+#          Recursively execute the 'coverage' target across the
+#          project sub-tree at the current invocation point.
+#
+#          This target is NOT intended to be user-visibile and -invoked.
+#
+#        check-local:
+#          Alias for the 'check-am' target. Execute local check
+#          targets at the current invocation point. Local coverage targets
+#          may depend on this to ensure local tests are made before
+#          coverage targets are made.
+#
+#          This target is intended to be user-visibile and -invoked.
+#
+
+.PHONY: coverage coverage-recursive coverage-local check-local
+
+check-local: check-am
+
+coverage: coverage-local
 
-.PHONY: coverage coverage-recursive
- 
 coverage: coverage-recursive
 
 coverage: check-am