Add rules to run scripts/begin-end-check.pl.

scripts/begin-end-check.pl

@@ -0,0 +1,47 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+# Check __BEGIN_NAMESPACE ... __END_NAMESPACE pairing in an include file.
+
+my $code = 0;
+for my $path (@ARGV) {
+    my $localcode = 0;
+    my @stack;
+
+    open my $in, '<', $path
+        or die "open $path failed: $!";
+
+    while (<$in>) {
+        if ( /^\s*__BEGIN_(.*)\b/ ) {
+            push @stack, $1;
+        }
+        elsif ( /^\s*__END_(.*)\b/ ) {
+            if (@stack) {
+                my $tag = pop @stack;
+		if ($1 ne $tag) {
+                    print "$path:$.: BEGIN $tag paired with END $1\n";
+		    $localcode = 1;
+		}
+            }
+            else {
+                print "$path:$.: END $1 does not match a begin\n";
+		$localcode = 1;
+            }
+        }
+    }
+
+    if (@stack) {
+	print "$path: Unmatched begin tags " . join (' ', @stack) ."\n";
+	$localcode = 1;
+    }
+
+    if ($localcode == 0) {
+	print "$path: OK\n";
+    } else {
+	$code = $localcode;
+    }
+}
+
+exit $code;