install header files required for development with libzfs_core

JFYI.  I bumped __FreeBSD_version to 1200013 to mark this change.

-------- Forwarded Message --------
Subject: svn commit: r307131 - head/include
Date: Wed, 12 Oct 2016 07:08:32 +0000 (UTC)
From: Andriy Gapon <avg_at_freebsd.org>
To: src-committers_at_freebsd.org, svn-src-all_at_freebsd.org, svn-src-head_at_freebsd.org

Author: avg
Date: Wed Oct 12 07:08:32 2016
New Revision: 307131
URL: https://svnweb.freebsd.org/changeset/base/307131

Log:
  install header files required development with libzfs_core

  libzfs_core provides a rather limited but committed (stable) interface
  for working with ZFS.  We install libzfs_core shared library but we do
  not install header files required for developing programs that use
  the library.  This change is to install the required header files
  libzfs_core.h, libnvpair.h and sys/nvpair.h.
    The headers are installed into the same locations as on illumos.
    Reviewed by:	mav, markj
  Differential Revision: https://reviews.freebsd.org/D8005

Modified:
  head/include/Makefile

Modified: head/include/Makefile
==============================================================================
--- head/include/Makefile	Wed Oct 12 06:58:01 2016	(r307130)
+++ head/include/Makefile	Wed Oct 12 07:08:32 2016	(r307131)
_at__at_ -237,6 +237,17 _at__at_ copies: .PHONY .META
 	cd ${.CURDIR}/../sys/teken; \
 	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 teken.h \
 	    ${DESTDIR}${INCLUDEDIR}/teken
+.if ${MK_CDDL} != "no"
+	cd ${.CURDIR}/../cddl/contrib/opensolaris/lib/libzfs_core/common; \
+	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 libzfs_core.h \
+	    ${DESTDIR}${INCLUDEDIR}
+	cd ${.CURDIR}/../cddl/contrib/opensolaris/lib/libnvpair; \
+	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 libnvpair.h \
+	    ${DESTDIR}${INCLUDEDIR}
+	cd ${.CURDIR}/../sys/cddl/contrib/opensolaris/uts/common/sys; \
+	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 nvpair.h \
+	    ${DESTDIR}${INCLUDEDIR}/sys
+.endif
  symlinks: .PHONY .META
 	_at_${ECHO} "Setting up symlinks to kernel source tree..."