Removed abstraction layer for SWT graphics.

...runk/src/org/fortiss/tooling/spiderchart/SpiderChart.java

...k/src/org/fortiss/tooling/spiderchart/example/Sample.java

...fortiss/tooling/spiderchart/gc/AbstractChartGraphics.java

...rg/fortiss/tooling/spiderchart/gc/AbstractChartImage.java

...tiss/tooling/spiderchart/gc/AbstractGraphicsSupplier.java

...ss/tooling/spiderchart/gc/swt/SpiderChartSwtGraphics.java

...rtiss/tooling/spiderchart/gc/swt/SpiderChartSwtImage.java

...g/fortiss/tooling/spiderchart/label/SpiderChartLabel.java

...ss/tooling/spiderchart/listener/ISpiderChartListener.java

...tiss/tooling/spiderchart/listener/SpiderChartAdapter.java

...rg/fortiss/tooling/spiderchart/model/AbstractPlotter.java

.../fortiss/tooling/spiderchart/model/SpiderChartLegend.java

...fortiss/tooling/spiderchart/model/SpiderChartPlotter.java

...g/fortiss/tooling/spiderchart/model/SpiderChartTitle.java

.../src/org/fortiss/tooling/spiderchart/style/FillStyle.java

.../src/org/fortiss/tooling/spiderchart/style/LineStyle.java

...rg/fortiss/tooling/spiderchart/swt/SpiderChartCanvas.java