Let SM play nice with OS X's headers.

stepmania/src/RageTypes.h

@@ -202,10 +202,11 @@ public:
 	}
 };
 
-
-template <class T>
-class Rect
+namespace SM
 {
+template <class T>
+	class Rect
+	{
 public:
 		Rect()						{};
 		Rect(T l, T t, T r, T b)	{ left = l, top = t, right = r, bottom = b; };
@@ -228,10 +229,10 @@ public:
 		bool operator!=( const Rect &other ) const { return !operator==(other); }
 		
 		T    left, top, right, bottom;
-};
-
-typedef Rect<int> RectI;
-typedef Rect<float> RectF;
+	};
+}
+typedef SM::Rect<int> RectI;
+typedef SM::Rect<float> RectF;
 
 /* Structure for our custom vertex type.  Note that these data structes 
  * have the same layout that D3D expects. */