Cocoa → Aspect Relation

File in src/Cocoa	Includes file in src/Aspect
Cocoa_Window.hxx	Aspect_FillMethod.hxx
Cocoa_Window.hxx	Aspect_GradientFillMethod.hxx
Cocoa_Window.hxx	Aspect_Handle.hxx
Cocoa_Window.hxx	Aspect_TypeOfResize.hxx
Cocoa_Window.hxx	Aspect_Window.hxx