bind: add support for the 'rndc' utility

Enable the control port on named that rncd uses to talk to it. Use
rndc to allow for lightweight reloads of some (per-zone) or all of
the database without an interruption of service.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

net/bind/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bind
 PKG_VERSION:=9.16.8
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 USERID:=bind=57:bind=57
 
 PKG_MAINTAINER:=Noah Meyerhans <frodo@morgul.net>