"dnssec-keys" is now a synonym for "managed-keys"

- managed-keys is now deprecated as well as trusted-keys, though
  it continues to work as a synonym for dnssec-keys
- references to managed-keys have been updated throughout the code.
- tests have been updated to use dnssec-keys format
- also the trusted-keys entries have been removed from the generated
  bind.keys.h file and are no longer generated by bindkeys.pl.

bin/tests/system/checkconf/tests.sh

@@ -427,7 +427,7 @@ echo_i "check that the dlv.isc.org KSK generates a warning ($n)"
 ret=0
 $CHECKCONF check-dlv-ksk-key.conf > checkconf.out$n 2>/dev/null || ret=1
 [ -s checkconf.out$n ] || ret=1
-grep "entry for dlv.isc.org still present" checkconf.out$n > /dev/null || ret=1
+grep "trust anchor for dlv.isc.org is present" checkconf.out$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; ret=1; fi
 status=`expr $status + $ret`