Bug 37197 Basepath for relative pathes in JAR-exporter
The basepath for the JAR-exporter is the eclipse-install-directory. I prefer it to be the root of the project (the description is saved in), so that relative pathes end inside the project. Now: <jardesc> <jar path="workspace/projectdir/jar.jar"/> Desired: <jardesc> <jar path="jar.jar"/> Reason: To make the jardesc-files portable for shared projects
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarFileExportOperation.java
if (folderPath.isValidPath(folderPath.toString()) && folderPath.segmentCount() >= 2)
			return JavaPlugin.getWorkspace().getRoot().getFolder(folderPath);
		else
			return null;
	}
	/**
	 * Returns the status of this operation.
	 * The result is a status object containing individual
	 * status objects.
	 *
	 * @return the status of this operation
	 */
	public IStatus getStatus() {
		String message= null;
		switch (fStatus.getSeverity()) {
			case IStatus.OK:
				message= ""; 
				break;
			case IStatus.INFO:
				message= JarPackagerMessages.getString("JarFileExportOperation.exportFinishedWithInfo"); 
				break;
			case IStatus.WARNING:
				message= JarPackagerMessages.getString("JarFileExportOperation.exportFinishedWithWarnings"); 
				break;
			case IStatus.ERROR:
				if (fJarPackages.length > 1)
					message= JarPackagerMessages.getString("JarFileExportOperation.creationOfSomeJARsFailed"); 
				else
					message= JarPackagerMessages.getString("JarFileExportOperation.jarCreationFailed"); 
				break;