Bug 19145 [Wizards] Make wizards resizable and keep bounds
Both the Checkbox Tree and the Checkbox List have horizontal scrollbars because mose package names and type names don't fit in the default size. It would be nice to be able to size this dialog bigger, and have it have a wider default size (I assume it is sized for 640x480? but is could be wider).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarPackageWizardPage.java
*
	 *	@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
	 *
	 *	@return java.lang.String
	 */
	protected String getDestinationLabel() {
		return JarPackagerMessages.getString("JarPackageWizardPage.destination.label"); 
	}
	/**
	 *	Answer the suffix that files exported from this wizard must have.
	 *	If this suffix is a file extension (which is typically the case)
	 *	then it must include the leading period character.
	 *
	 *	@return java.lang.String
	 */
	protected String getOutputSuffix() {
		return "." + JarPackagerUtil.JAR_EXTENSION; 
	}
	/**
	 * Returns an iterator over this page's collection of currently-specified 
	 * elements to be exported. This is the primary element selection facility