Illumos #2619 and #2747

2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Eric Schrock <Eric.Schrock@delphix.com>

References:
  illumos/illumos-gate@53089ab7c8
  illumos/illumos-gate@ad135b5d64
  illumos changeset: 13700:2889e2596bd6
  https://www.illumos.org/issues/2619
  https://www.illumos.org/issues/2747

NOTE: The grub specific changes were not ported.  This change
must be made to the Linux grub packages.

Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

lib/libnvpair/Makefile.am

@@ -12,7 +12,8 @@ libnvpair_la_SOURCES = \
 	$(top_srcdir)/lib/libnvpair/libnvpair.c \
 	$(top_srcdir)/lib/libnvpair/nvpair_alloc_system.c \
 	$(top_srcdir)/module/nvpair/nvpair_alloc_fixed.c \
-	$(top_srcdir)/module/nvpair/nvpair.c
+	$(top_srcdir)/module/nvpair/nvpair.c \
+	$(top_srcdir)/module/nvpair/fnvpair.c
 
 libnvpair_la_LIBADD = \
         $(top_builddir)/lib/libuutil/libuutil.la

lib/libnvpair/libnvpair.c

@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
  */
 
 #include <unistd.h>
@@ -803,6 +804,10 @@ dump_nvlist(nvlist_t *list, int indent)
 
 	while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
 		switch (nvpair_type(elem)) {
+		case DATA_TYPE_BOOLEAN:
+			(void) printf("%*s%s\n", indent, "", nvpair_name(elem));
+			break;
+
 		case DATA_TYPE_BOOLEAN_VALUE:
 			(void) nvpair_value_boolean_value(elem, &bool_value);
 			(void) printf("%*s%s: %s\n", indent, "",