Added class level comments

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

...org/fortiss/tooling/spiderchart/gc/AbstractChartFont.java

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

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

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

...i/trunk/src/org/fortiss/tooling/spiderchart/gc/Fonts.java

...i/trunk/src/org/fortiss/tooling/spiderchart/gc/Point.java

...trunk/src/org/fortiss/tooling/spiderchart/gc/Polygon.java

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

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

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

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

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

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

...fortiss/tooling/spiderchart/legend/SpiderChartLegend.java