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
result[0]= JavaPlugin.getDirtyEditors();
				}
			}
		);
		return (IEditorPart[])result[0];
	}
	protected void saveDescription() throws CoreException, IOException {
		
		if (fJarPackage.isManifestReused())
			fJarPackage.setGenerateManifest(false);
		ByteArrayOutputStream objectStreamOutput= new ByteArrayOutputStream();
		IJarDescriptionWriter writer= fJarPackage.createJarDescriptionWriter(objectStreamOutput);
		ByteArrayInputStream fileInput= null;
		try {
			writer.write(fJarPackage);
			fileInput= new ByteArrayInputStream(objectStreamOutput.toByteArray());
			IFile descriptionFile= fJarPackage.getDescriptionFile();
			if (descriptionFile.isAccessible()) {
				if (fJarPackage.allowOverwrite() || JarPackagerUtil.askForOverwritePermission(fParentShell, descriptionFile.getFullPath().toString()))
					descriptionFile.setContents(fileInput, true, true, null);
			} else
				descriptionFile.create(fileInput, true, null);
		} finally {
			if (fileInput != null)
				fileInput.close();
			if (writer != null)
				writer.close();
		}
	}
	protected void saveManifest() throws CoreException, IOException {