Starting over with current development branch of Agar
Add example programs
Add a source file to be translated
Add core.go and second part of gui.go
Add window.go
Added type AG_Window
Added core.AG_InitCore
Added gui.AG_InitGraphics
Added gui.AG_WindowNew
Added gui.AG_LabelNew
Added gui.AG_WindowShow
Added gui.AG_EventLoop and fixed minor issues