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/MiniCL/CMakeLists.txt

@@ -20,3 +20,12 @@ IF (UNIX)
   TARGET_LINK_LIBRARIES(AppVectorAdd_Mini pthread)
 ENDIF(UNIX)
 
+
+IF (NOT INTERNAL_CREATE_DISTRIBUTABLE_MSVC_PROJECTFILES)
+	ADD_CUSTOM_COMMAND(
+		TARGET AppVectorAdd_Mini
+		POST_BUILD
+		COMMAND ${CMAKE_COMMAND} ARGS -E copy_if_different ${BULLET_PHYSICS_SOURCE_DIR}/Demos/VectorAdd_OpenCL/VectorAddKernels.cl ${CMAKE_CURRENT_BINARY_DIR}
+	)
+ENDIF()
+