#6 jsc.defaultsc3 check fails

[David Hofmann]

In StandardVMType.validateInstallLocation the existence of a server executable is checked.
Because there is no server executable in jsc.defaultsc3, this leads to an Exception:

org.eclipse.core.runtime.CoreException: Illegal install location /Users/dave/Development/EclipseWorkspaces/JSCEclipse/jsc.defaultsc3 for vmInstall jsc.defaultsc3.defaultSC3Install contributed by jsc.defaultsc3: Target is not a SC Root. Server executable was not found
at jsc.launching.JSCRuntime.abort(JSCRuntime.java:848)
at jsc.launching.JSCRuntime.abort(JSCRuntime.java:836)
at jsc.launching.JSCRuntime.addVMExtensions(JSCRuntime.java:759)
at jsc.launching.JSCRuntime.initializeVMs(JSCRuntime.java:602)
at jsc.launching.JSCRuntime.getDefaultVMInstall(JSCRuntime.java:243)
at jsc.internal.launching.JREContainerInitializer.resolveVM(JREContainerInitializer.java:111)
at jsc.internal.launching.JREContainerInitializer.initialize(JREContainerInitializer.java:53)
at jsc.internal.core.JSCModelManager.initializeContainer(JSCModelManager.java:2640)
at jsc.internal.core.JSCModelManager.getClasspathContainer(JSCModelManager.java:1783)
at jsc.core.JSCCore.getClasspathContainer(JSCCore.java:991)
at jsc.internal.core.JSCProject.resolveClasspath(JSCProject.java:2599)
at jsc.internal.core.JSCProject.getResolvedClasspath(JSCProject.java:1719)
at jsc.internal.core.DeltaProcessingState.getRootInfos(DeltaProcessingState.java:285)
at jsc.internal.core.DeltaProcessingState.initializeRoots(DeltaProcessingState.java:226)
at jsc.core.JSCCore.initializeAfterLoad(JSCCore.java:1659)
at jsc.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:24)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)