Forge needs to provide an XML manipulation library similar to the Java Parser

As part of project generation, manipulation, and general grokkage, Forge needs to be able to consume XML files in a manner that is relatively easy for both developers and thusly for the users of the plugins they provide.

Potential options:

1) GPath - http://groovy.codehaus.org/Reading+XML+using+Groovy%27s+XmlParser
2) XPath - http://www.ibm.com/developerworks/library/x-javaxpathapi.html
3) MVEL - using property handlers to expose XML

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By simply adding groovy dep to the parent POM (and the relevant API poms), we could enable the use of Groovy in plugins, which would enable GPath if developers do not want to use XPath.