fix compile issue(s) in BT_USE_DOUBLE_PRECISION mode

examples/StandaloneMain/main_tinyrenderer_single_example.cpp

@@ -170,7 +170,7 @@ struct TinyRendererGUIHelper : public GUIHelperInterface
 		clearBuffers(clearColor);
 	
 		
-		ATTRIBUTE_ALIGNED16(float modelMat[16]);
+		ATTRIBUTE_ALIGNED16(btScalar modelMat[16]);
 		ATTRIBUTE_ALIGNED16(float viewMat[16]);
 		ATTRIBUTE_ALIGNED16(float projMat[16]);
 
@@ -178,7 +178,7 @@ struct TinyRendererGUIHelper : public GUIHelperInterface
 		m_camera.getCameraViewMatrix(viewMat);
 		
 		btVector3 lightDirWorld(-5,200,-40);
-		switch (1)//app->getUpAxis())
+		switch (m_upAxis)
 		{
 		case 1:
     			lightDirWorld = btVector3(-50.f,100,30);

src/BulletDynamics/ConstraintSolver/btSliderConstraint.h

@@ -25,6 +25,8 @@ TODO:
 #ifndef BT_SLIDER_CONSTRAINT_H
 #define BT_SLIDER_CONSTRAINT_H
 
+#include "LinearMath/btScalar.h"//for BT_USE_DOUBLE_PRECISION
+
 #ifdef BT_USE_DOUBLE_PRECISION
 #define btSliderConstraintData2		btSliderConstraintDoubleData
 #define btSliderConstraintDataName  "btSliderConstraintDoubleData"

src/LinearMath/btScalar.h

@@ -17,6 +17,7 @@ subject to the following restrictions:
 #ifndef BT_SCALAR_H
 #define BT_SCALAR_H
 
+
 #ifdef BT_MANAGED_CODE
 //Aligned data types not supported in managed code
 #pragma unmanaged