Remove reminisce of build_lib from eclipse .classpath
Add joda-time to jruby-core pom.xml to get build working with clean checkout
Merge pull request #864 from jendave/maven-reporting

Move Maven site reporting to parent pom. Fixed parent hierarchy.
Use <pluginManagement> in parent pom so that all plugins (and their versions) for the project can be centrally managed. All Maven plugins are now consistent (where necessary) throughout the project.
Merge branch 'plugin-management' of https://github.com/jendave/jruby into plugin-management