MFC r267599:

- Add a LOCAL_ITOOLS to allow adding additional tools required for the
    installworld and distributeworld targets

PR:		179562

Makefile.inc1

@@ -17,6 +17,7 @@
 #	-DNO_DOCUPDATE do not update doc in ${MAKE} update
 #	-DNO_CTF do not run the DTrace CTF conversion tools on built objects
 #	LOCAL_DIRS="list of dirs" to add additional dirs to the SUBDIR list
+#	LOCAL_ITOOLS="list of tools" to add additional tools to the ITOOLS list
 #	LOCAL_LIB_DIRS="list of dirs" to add additional dirs to libraries target
 #	LOCAL_MTREE="list of mtree files" to process to allow local directories
 #	    to be created before files are installed
@@ -756,7 +757,8 @@ _nmtree_itools=	nmtree
 ITOOLS=	[ awk cap_mkdb cat chflags chmod chown \
 	date echo egrep find grep id install ${_install-info} \
 	ln lockf make mkdir mtree ${_nmtree_itools} mv pwd_mkdb \
-	rm sed sh sysctl test true uname wc ${_zoneinfo}
+	rm sed sh sysctl test true uname wc ${_zoneinfo} \
+	${LOCAL_ITOOLS}
 
 #
 # distributeworld

share/man/man7/build.7

@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 27, 2014
+.Dd June 17, 2014
 .Dt BUILD 7
 .Os
 .Sh NAME
@@ -415,6 +415,12 @@ If set, this variable supplies a list of additional directories relative to
 the root of the source tree to build as part of the
 .Cm everything
 target.
+.It Va LOCAL_ITOOLS
+If set, this variable supplies a list of additional tools that are used by the
+.Cm installworld
+and
+.Cm distributeworld
+targets.
 .It Va LOCAL_LIB_DIRS
 If set, this variable supplies a list of additional directories relative to
 the root of the source tree to build as part of the