[Graphics] Fix #260. Force to recreate the full swapchain when going to fullscreen as It seems that DXGI is not updating correctly the refresh rate without.
[SharpDX] Make RenderLoop to process all windows message instead of the main window
[SharpDX] Make RenderForm resize working when RenderForm is hosted in a HwndHost for WPF. Remove minimum size restriction of 200,200.