Exclude nodetags.h from headerscheck and cpluspluscheck.

Since this file contains just a fragment of an enum declaration,
it can't be compiled on its own.

Author: tglsfdc

src/tools/pginclude/cpluspluscheck

@@ -97,6 +97,10 @@ do
 	# sepgsql.h depends on headers that aren't there on most platforms.
 	test "$f" = contrib/sepgsql/sepgsql.h && continue
 
+	# nodetags.h cannot be included standalone: it's just a code fragment.
+	test "$f" = src/include/nodes/nodetags.h && continue
+	test "$f" = src/backend/nodes/nodetags.h && continue
+
 	# These files are not meant to be included standalone, because
 	# they contain lists that might have multiple use-cases.
 	test "$f" = src/include/access/rmgrlist.h && continue

src/tools/pginclude/headerscheck

@@ -93,6 +93,10 @@ do
 	# sepgsql.h depends on headers that aren't there on most platforms.
 	test "$f" = contrib/sepgsql/sepgsql.h && continue
 
+	# nodetags.h cannot be included standalone: it's just a code fragment.
+	test "$f" = src/include/nodes/nodetags.h && continue
+	test "$f" = src/backend/nodes/nodetags.h && continue
+
 	# These files are not meant to be included standalone, because
 	# they contain lists that might have multiple use-cases.
 	test "$f" = src/include/access/rmgrlist.h && continue