Revision 231058

Resolving: MNG-592 (again)

o Modified the PluginMappingDeployMojo in maven-plugin-plugin to always deploy the plugins.xml regardless. This may be a bit heavy, but it avoids the snag with the plugins.xml being detected in the local repository after the install phase runs...plugin mappings weren't making it to the repository during deploy.

o Added a new series of IT: it2xxx which will be tests that require more than a single maven invocation, and will be run via shell script, at least for now. This one builds and deploys a plugin, then attempts to use the plugin by referencing the prefix mapping in the (non-central) remote repository.