Extract the validator code from deployers/ into validator module

The jboss-jca-validator-*.jar could then depend on jboss-jca-common-impl.jar as the annotation / metadata classes would move to the common/ module.

The validator should be refactored into org.jboss.jca.validator – and sub-packages.

The validator/ module should of course be built before deployers/ - as the deployers would depend on it.

The validator/ module should have

• jboss-jca-validator.jar (framework)
• jboss-jca-validator-cli.jar (standalone)
• jboss-jca-validator-ant.jar (Ant task)
• jboss-jca-validator-maven.jar (Maven plugin)