Need to clear db-* files in clean.sh.

bin/tests/system/masterformat/clean.sh

@@ -14,7 +14,7 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id: clean.sh,v 1.7 2011/10/26 23:46:14 tbox Exp $
+# $Id: clean.sh,v 1.8 2011/10/30 22:55:12 each Exp $
 
 rm -f named-compilezone
 rm -f ns1/example.db.raw
@@ -23,3 +23,4 @@ rm -f dig.out.*
 rm -f */named.memstats
 rm -f ns2/transfer.db.*
 rm -f ns2/formerly-text.db
+rm -f ns2/db-*