Inferencing of static imports and * imports not working

Due to the breaking changes in api between the Groovy 1.6 and 1.7 streams, we are not sending the inferencing visitor down the static and * imports of a module node.

I think the solution here is to create a compatibility class in the two org.codehaus.groovy projects that, when asked return all of the ImportNodes of a module node. For 1.6 workspaces, this will not include the static and * imports, but for 1.7 workspaces, this will.