Add support for LinearGradientBrush.
Add LinearGradientBrushTest program to Samples.
Fix Matrix Matrix (RectangleF rect, PointF[] plgpts) and Matrix (Rectangle rect, Point[] plgpts).
Add different views to cycle through to demonstrate LinearGradientBrush.
Add more examples to LinearGradientBrushTest.
Scale font size based on 96 dpi.  This makes it consistent with Windows.
Fix up font sizes.
Merge pull request #7 from kjpou1/master

Add LinearGradientBrush implementation