Annotate integ tests failing with instant execution in :ide There's a large number of junit tests in that module, descendent of AbstractIdeIntegrationTest. This commit simply ignores them all when running with the 'instant' executer because the junit fixture isn't very handy, they were all failing for the same reason as other spock based tests from that module anyway.
Add some more test coverage to verify the IDE plugins are consistent in how they behave in composite builds. This just covers a couple of simple scenarios. Change the `eclipse` task of the root project so that it generates the Eclipse projects for all builds, and so produces usable project files when there are included builds.