JDNSS -- a DNS server in Java Files

This release adds the querying of a live database to JDNSS.

There are four new command line options to connect to a database.

JDNSS now uses the same schema as powerdns:
    http://doc.powerdns.com/generic-mypgsql-backends.html
Note: there are no PQDNs allowed -- all names are assumed to be fully
qualified and are not terminated by dots.

Here's an example that I use for test:
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CREATE DATABASE JDNSS;

USE JDNSS;

CREATE USER 'JDNSS'@'localhost' IDENTIFIED BY 'JDNSS';

create table domains (
 id		 INT auto_increment,
 name		 VARCHAR(255) NOT NULL,
 master		 VARCHAR(128) DEFAULT NULL,
 last_check	 INT DEFAULT NULL,
 type		 VARCHAR(6) NOT NULL,
 notified_serial INT DEFAULT NULL, 
 account         VARCHAR(40) DEFAULT NULL,
 primary key (id)
);

CREATE UNIQUE INDEX name_index ON domains(name);

CREATE TABLE records (
  id              INT auto_increment,
  domain_id       INT DEFAULT NULL,
  name            VARCHAR(255) DEFAULT NULL,
  type            VARCHAR(6) DEFAULT NULL,
  content         VARCHAR(255) DEFAULT NULL,
  ttl             INT DEFAULT NULL,
  prio            INT DEFAULT NULL,
  change_date     INT DEFAULT NULL,
  primary key(id)
);

CREATE INDEX rec_name_index ON records(name);
CREATE INDEX nametype_index ON records(name,type);
CREATE INDEX domain_id ON records(domain_id);

create table supermasters (
  ip VARCHAR(25) NOT NULL, 
  nameserver VARCHAR(255) NOT NULL, 
  account VARCHAR(40) DEFAULT NULL
);

GRANT SELECT ON supermasters TO JDNSS;
GRANT ALL ON domains TO JDNSS;
GRANT ALL ON records TO JDNSS;

INSERT INTO domains (name, type) values ('computingfrontiers.org', 'NATIVE');

insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'computingfrontiers.org', 'SOA', 'ns1.computingfrontiers.org beaty.emess.mscd.edu 23 28800 7200 604800 86400', 3600, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'computingfrontiers.org', 'NS', 'ns1.computingfrontiers.org', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'computingfrontiers.org', 'NS', 'ns2.computingfrontiers.org', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'computingfrontiers.org', 'MX', 'mail.computingfrontiers.org', 86400, 10);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'computingfrontiers.org', 'A', '147.153.165.102', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'www.computingfrontiers.org', 'A', '147.153.165.102', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'mail.computingfrontiers.org', 'A', '147.153.165.102', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'ns1.computingfrontiers.org', 'A', '147.153.165.98', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'ns2.computingfrontiers.org', 'A', '147.153.165.102', 86400, 0);
insert into records (domain_id, name,type,content,ttl,prio)
    values (1, 'www.computingfrontiers.org', 'AAAA', 'FEDC:BA98:7654:3210:FEDC:BA98:7654:3210', 86400, 0);
    values (1, 'computingfrontiers.org', 'TXT', 'this is a test', 86400, 0);
    values (1, 'ftp.computingfrontiers.org', 'CNAME', 'www.computingfrontiers.org', 86400, 0);
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