am fd1dc06b: Use standalone days of the week for dayButton strings.

    // Single-char version of day name, e.g.: 'S', 'M', 'T', 'W', 'T', 'F', 'S'

    private static String[] sShortWeekdays = null;

    private static final String DATE_FORMAT_SHORT = isJBMR2OrLater() ? "EEEEE" : "EEE";

    private static final String DATE_FORMAT_SHORT = isJBMR2OrLater() ? "ccccc" : "ccc";

    // Long-version of day name, e.g.: 'Sunday', 'Monday', 'Tuesday', etc

    private static String[] sLongWeekdays = null;