Bug 56973 [Themes] FontRegistry.bestDataArray() chops off all but the first "good" font
M8 The font registry is not making use of the motif ability to have multiple FontData objects in a font because bestDataArray() is using only the first good font.
bundles/org.eclipse.jface/src/org/eclipse/jface/resource/FontRegistry.java
/**
     * FontRecord is a private helper class that holds onto a font
     * and can be used to generate its bold and italic version. 
     */
    private class FontRecord {
        Font baseFont;
        Font boldFont;
        Font italicFont;
        FontData[] baseData;
        /**
         * Create a new instance of the receiver based on the 
         * plain font and the data for it.
         * @param plainFont The base looked up font.
         * @param data The data used to look it up.
         */