fix Linux build (tested on Ubuntu 12.10, 32bit)

Demos3/GpuDemos/rigidbody/GpuConvexScene.cpp

@@ -19,7 +19,7 @@
 #include "../gwenUserInterface.h"
 #include "Bullet3Dynamics/ConstraintSolver/b3Point2PointConstraint.h"
 #include "OpenGLWindow/GLPrimitiveRenderer.h"
-#include "Bullet3OpenCL/RayCast/b3GpuRayCast.h"
+#include "Bullet3OpenCL/Raycast/b3GpuRaycast.h"
 
 
 void GpuConvexScene::setupScene(const ConstructionInfo& ci)

btgui/OpenGLWindow/OpenGLInclude.h

@@ -42,10 +42,10 @@ subject to the following restrictions:
 
 
 ///on Linux only glDrawElementsInstancedARB is defined?!?
-#ifdef __linux
-#define glDrawElementsInstanced glDrawElementsInstancedARB
-
-#endif //__linux
+//#ifdef __linux
+//#define glDrawElementsInstanced glDrawElementsInstancedARB
+//
+//#endif //__linux
 
 #endif //__OPENGL_INCLUDE_H
 

test/OpenCL/BasicInitialize/main.cpp

@@ -24,15 +24,11 @@ cl_command_queue	g_cqCommandQue;
 
 #include "Bullet3Common/b3Logging.h"
 
-#include <Windows.h>
 
 void myprintf(const char* msg)
 {
-#ifdef _WINDOWS
-	OutputDebugStringA(msg);
-#else
+	//OutputDebugStringA(msg);
 	printf(msg);
-#endif
 }
 
 int main(int argc, char* argv[])
@@ -117,4 +113,4 @@ int main(int argc, char* argv[])
 	b3Printf("press <Enter>\n");
 	getchar();
 	return 0;
-}
+}