[master] rebuild resigning heaps when loading map files

3597.	[bug]		Ensure automatic-resigning heaps are reconstructed
			when loading zones in map format. [RT #33381]

bin/tests/system/masterformat/ns1/signed.db

@@ -0,0 +1,32 @@
+; Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+$TTL 1D
+
+@			IN SOA	ns hostmaster (
+				1
+				3600
+				1800
+				1814400
+				3
+				)
+			NS	ns
+ns			A	10.53.0.1
+mx			MX	10 mail
+a			A	10.53.0.1
+			A	10.53.0.2
+aaaa			AAAA	2001:db8::53
+cname			CNAME	cname-target
+dname			DNAME	dname-target
+txt			TXT	"this is text"