don't align IBM Cell SDK version (USE_LIBSPE2)

src/LinearMath/btQuadWord.h

@@ -27,9 +27,13 @@ subject to the following restrictions:
 /**@brief The btQuadWordStorage class is base class for btVector3 and btQuaternion. 
  * Some issues under PS3 Linux with IBM 2.1 SDK, gcc compiler prevent from using aligned quadword.
  */
-#if defined (__SPU__)
+#if defined (USE_LIBSPE2)
+class btQuadWordStorage
+#else
 ATTRIBUTE_ALIGNED16(class) btQuadWordStorage
+#endif
 {
+#if defined (__SPU__) && defined (__CELLOS_LV2__)
 protected:
 	union {
 		vec_float4 mVec128;
@@ -41,13 +45,11 @@ public:
 		return mVec128;
 	}
 };
-#else
-class btQuadWordStorage
-{
+#else //__CELLOS_LV2__ __SPU__
 protected:
 	btScalar	m_floats[4];
 };
-#endif
+#endif //__CELLOS_LV2__ __SPU__
 
 /** @brief The btQuadWord is base-class for vectors, points */
 class	btQuadWord : public btQuadWordStorage