Further cleanup of Spiderchart code.

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

...rtiss/tooling/spiderchart/builder/SpiderChartBuilder.java

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

...nk/src/org/fortiss/tooling/spiderchart/example/Nexus.java

...ortiss/tooling/spiderchart/gc/swt/SpiderChartSwtFont.java

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

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

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

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

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

...org/fortiss/tooling/spiderchart/sequence/LineDataSeq.java

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

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