PDPageContentStream: Add setMiterLimit()

contentStream.appendRawCommands(11f + " M ");

    /**
     * Set the miter limit.
     *
     * @param miterLimit the new miter limit.
     * @throws IOException If the content stream could not be written.
     */ 
    public void setMiterLimit(float miterLimit) throws IOException
    {
        if (inTextMode)
        {
            throw new IllegalStateException("Error: setMiterLimit is not allowed within a text block.");
        }
        writeOperand(miterLimit);
        writeOperator("M");
    }