added basic serialization for several constraints including btPoint2PointConstraint, btHingeConstraint, btSliderConstraint, btConeTwistConstraint, btGeneric6DofConstraint

(no motor support or advanced settings yet)
added btStaticPlaneShape serialization
Added toggle in cmake for BenchmarksDemo to enable/disable graphics rendering

Extras/Serialize/BulletFileLoader/autogenerated/bullet_btPoint2PointConstraintFloatData.h

@@ -0,0 +1,43 @@
+/* Copyright (C) 2006-2009 Erwin Coumans & Charlie C
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+*
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+*
+* 1. The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software
+*    in a product, an acknowledgment in the product documentation would be
+*    appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+// Auto generated from makesdna dna.c
+#ifndef __BULLET_BTPOINT2POINTCONSTRAINTFLOATDATA__H__
+#define __BULLET_BTPOINT2POINTCONSTRAINTFLOATDATA__H__
+
+
+// -------------------------------------------------- //
+#include "bullet_Common.h"
+#include "bullet_btTypedConstraintData.h"
+#include "bullet_btVector3FloatData.h"
+
+namespace Bullet {
+
+
+    // ---------------------------------------------- //
+    class btPoint2PointConstraintFloatData
+    {
+    public:
+        btTypedConstraintData m_typeConstraintData;
+        btVector3FloatData m_pivotInA;
+        btVector3FloatData m_pivotInB;
+    };
+}
+
+
+#endif//__BULLET_BTPOINT2POINTCONSTRAINTFLOATDATA__H__