Resolved GRAILS-8496, by adding missing dependencies required for an Ant...

This a fix for GRAILS-8496 (http://jira.grails.org/browse/GRAILS-8496). 

Running `grails integrate-with --ant` doesn't produce an `ivy.xml` file that is usable for a build.

Any attempt to run a target via ant will throw an * InvocationTargetException*.

![screen shot 2013-07-15 at 9 32 26 pm](https://f.cloud.github.com/assets/2508090/802122/b270afc6-edb7-11e2-9a4e-22c7c92de12d.png)

By running Apache Ant in verbose mode, the missing dependencies in the classpath are easily identified.

The pull request adds `ivy`, `gant`, `line`, `jansi` to the `ivy.xml` configuration file.