UTF16 encoded string to PDFDocEncoding

[Andrea Vacondio]

Hi, we came across this case where we are basically cloning outline items
where the original outline title is a UTF16BE encoded text string
containing the value 00A0 (non break space). We later use the string to
assign the title in a new outline item and the A0 is recognised as a € sign.
Here is a simple test:

        COSString victim = COSString
                .parseHex("FEFF004300680061007000740065007200A0");
        PDOutlineItem node = new PDOutlineItem();
        node.setTitle(victim.getString());

If you look at the node dictionary you'll see that the title value is
Chapter€