fixed spacing in the headers to get rid of some warnings and some other

little minor spacing issues.

source/gameengine/GamePlayer/common/unix/GPU_Canvas.h

@@ -58,3 +58,4 @@ public:
 };
 
 #endif  // __GPU_CANVAS_H
+

source/gameengine/GamePlayer/common/unix/GPU_Engine.h

@@ -61,5 +61,5 @@ private:
 	void AddEventHandlers();
 };
 
-
 #endif  // __GPU_ENGINE_H
+

source/gameengine/GamePlayer/common/unix/GPU_KeyboardDevice.h

@@ -60,5 +60,5 @@ public:
 		convert_x_keycode_to_kx_keycode(unsigned int key);
 };
 
-
 #endif  // _GPU_KEYBOARDDEVICE_H
+

source/gameengine/GamePlayer/common/unix/GPU_PolygonMaterial.h

@@ -55,3 +55,4 @@ public:
 };
 
 #endif  // __GPU_POLYGONMATERIAL_H
+

source/gameengine/GamePlayer/common/unix/GPU_System.h

@@ -47,5 +47,5 @@ public:
 	virtual double GetTimeInSeconds();
 };
 
-
 #endif  // __GPU_SYSTEM_H
+