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/JarPackageWizardPage.java
*	Create the export options specification widgets.
	 *
	 *	@param parent org.eclipse.swt.widgets.Composite
	 */
	protected void createOptionsGroup(Composite parent) {
		Composite optionsGroup= new Composite(parent, SWT.NONE);
		GridLayout layout= new GridLayout();
		layout.marginHeight= 0;
		optionsGroup.setLayout(layout);
		fCompressCheckbox= new Button(optionsGroup, SWT.CHECK | SWT.LEFT);
		fCompressCheckbox.setText(JarPackagerMessages.getString("JarPackageWizardPage.compress.text")); 
		fCompressCheckbox.addListener(SWT.Selection, this);
		fOverwriteCheckbox= new Button(optionsGroup, SWT.CHECK | SWT.LEFT);
		fOverwriteCheckbox.setText(JarPackagerMessages.getString("JarPackageWizardPage.overwrite.text")); 
		fOverwriteCheckbox.addListener(SWT.Selection, this);
	}
	/**
	 *	Answer the contents of the destination specification widget. If this
	 *	value does not have the required suffix then add it first.
	 *
	 *	@return java.lang.String
	 */
	protected String getDestinationValue() {
		String destinationText= fDestinationNamesCombo.getText().trim();
		if (destinationText.indexOf('.') < 0)
			destinationText += getOutputSuffix();
		return destinationText;
	}
	/**
	 *	Answer the string to display in self as the destination type