bind cross compile support integration

Pass system types from dhcp configure to bind configure.

This patch is submitted upstream as part of a cross compiling enhancement
suggestion to dhcp-suggest@isc.org. Reference ISC-Bugs #41502.

Signed-off-by: Doug Kehn <rdkehn@yahoo.com>

Index: dhcp-4.3.3-P1/bind/Makefile.in
===================================================================
--- dhcp-4.3.3-P1.orig/bind/Makefile.in
+++ dhcp-4.3.3-P1/bind/Makefile.in
@@ -30,7 +30,9 @@ bindconfig = --disable-kqueue --disable-
 	--without-openssl --without-libxml2 --enable-exportlib \
 	--with-gssapi=no --enable-threads=no @BINDCONFIG@ \
 	--with-export-includedir=${binddir}/include \
-	--with-export-libdir=${binddir}/lib
+	--with-export-libdir=${binddir}/lib \
+	--target=@target_alias@ --host=@host_alias@ \
+	--build=@build_alias@
 
 @BIND_ATF_FALSE@cleandirs = ./lib ./include
 @BIND_ATF_TRUE@cleandirs = ./lib ./include ./atf