title: JQPlot Legend not showing in multiple columns even after setting numberColumns :3
body: <p>I want to show Legends in multiple columns and just one row, but even after setting these properties in Legend rendererOptions, its not getting changed, and showing in only one column.
  This is the code I am using:</p>
  
  <pre><code> $(document).ready(function () {
      var obj = JSON.parse("[[65,68],[88,59],[78,68],[68,69],[88,88],[75,66]]");
              $.jqplot.config.enablePlugins = true;
              plot2 = $.jqplot('chart1', obj, {
                  animate: true,
                  seriesDefaults: {
                      renderer: $.jqplot.BarRenderer,
                      rendererOptions: {
                          barWidth: 25,
                          barPadding: 2,
                          shadow: false,
                      },
                      pointLabels: {
                          show: true,
                      }
                  },
                  series: [
                   { label: 'English' },
                   { label: 'Hindi' },
                   { label: 'Maths' },
                   { label: 'Science' },
                   { label: 'Computers' },
                   { label: 'History' }
                  ],
  
                  seriesColors: ['#C0504D', '#1F497D', '#4BACC6', '#8064A2', '#9BBB59', '#F79646', '#948A54'],
                  grid: {
                      backgroundColor: "#FFFFFF",
                      gridLineColor: '#000000',
                      drawBorder: false,
                      shadow: false,
                      gridLineWidth: 0.5
                  },
                  legend: {
  
                      show: true,
  
                      location:'s![enter image description here][1]',
                      placement: 'outsideGrid',
                      shrinkGrid: true,
                      rendererOptions: {
                          numberColumns: 3,
                          numberRows : 1
                      }
                  },
                  axes: {
                      xaxis: {
                          renderer: $.jqplot.CategoryAxisRenderer,
                          tickRenderer: $.jqplot.CanvasAxisTickRenderer,
                          ticks: ['FA 1', 'FA 2'],
                          tickOptions: {
                              angle: -90,
                              textColor: "#000000",
                              showGridline: true
                          },
                      },
                      yaxis: {
                          min: '0',
                          max: '100',
                          renderer: $.jqplot.CanvasAxisTickRenderer,
                          rendererOptions: { tickRenderer: $.jqplot.CanvasAxisTickRenderer },
                          ticks: [10, 20, 30, 40, 50, 60, 70, 80, 90, 100],
                          tickOptions: {
                              textColor: "#000000",
                              showGridline: true,
                              formatString: "%d"
                          }
                      }
  
                  }
              });
  
  });
  </code></pre>