Mostly seem to have fixed SDL_CalculateShapeTree. Mostly. There still seem to be some rendering artifacts, stepping effects, and such on Windows -- which indicates subtle logic errors in SDL_CalculateShapeTree(). Oh well, back into the salt mine.

//+
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// Prefix header for all source files of the '�PROJECTNAME�' target in the '�PROJECTNAME�' project+
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//+
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#include "SDL.h"+
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#ifdef __OBJC__+
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    #import <Cocoa/Cocoa.h>+
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#endif+
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