init.d: wait for named to finish exiting in stop
init.d: wait for named to finish exiting in stop

Addresses-Debian-Bug: 461464
Signed-off-by: LaMont Jones <0ab8dc438f73addc98d9ad5925ec8f2b97991703@debian.org>

tjaalton/bind9,tjaalton/bind9,tjaalton/bind9,tjaalton/bind9,tjaalton/bind9,tjaalton/bind9