Create a stringify example, instead of loading the .cl file from disk, include it as a string.

The kernel in the .cl file is also compiled by the native C++ cpu compiler, when using MiniCL.
When you want to debug the kernel using MiniCL, and want to put breakpoints, it is best to:

1) enabled the define #define DEBUG_MINICL_KERNELS 1 in Bullet/src/BulletMultiThreaded/MiniCL.cpp
2) temporarily remove the stringify lines in the .cl kernel, because it prevents the debugger from finding the right line.

Demos/VectorAdd_OpenCL/VectorAddKernels.cl

@@ -1,3 +1,16 @@
+
+#ifndef GUID_ARG
+#define GUID_ARG
+#endif
+
+
+#ifndef MSTRINGIFY
+#define MSTRINGIFY(A) A
+#endif
+
+
+MSTRINGIFY(
+
 /*
 Bullet Continuous Collision Detection and Physics Library, http://bulletphysics.org
 Copyright (C) 2006 - 2009 Sony Computer Entertainment Inc. 
@@ -13,10 +26,7 @@ subject to the following restrictions:
 3. This notice may not be removed or altered from any source distribution.
 */
 
-///GUID_ARG is only used by MiniCL to pass in the guid used by its get_global_id implementation
-#ifndef GUID_ARG
-#define GUID_ARG
-#endif
+
 
 ///////////////////////////////////////////////////
 // OpenCL Kernel Function for element by element vector addition
@@ -47,3 +57,4 @@ __kernel void VectorAdd(__global const float8* a, __global const float8* b, __gl
     c[get_global_id(0)] = f8Out;
 }
 
+);