Distributions are now distinct Eclipse projects

[Doug Simon]

As of http://hg.openjdk.java.net/graal/graal/rev/e065b9746246, the 'mx eclipseinit’ and 'mx ideinit’ commands generate an Eclipse project for each distribution declared in mx/projects. As a result, Eclipse only (re)builds the jar for a distribution after all update tasks for all modified constituent projects have completed, instead of doing it for each project.

To ensure you get the same behavior from Eclipse as prior to this change, you need to import the distribution projects into Eclipse (the same way you would import normal projects).

-Doug