examples: distribute opencl kernel source

examples/Makefile.am

@@ -39,6 +39,7 @@ endif
 EXTRA_DIST = 					\
 	basic_examples/vector_scal_opencl_kernel.cl \
 	spmv/spmv_cuda.cu			\
+	spmv/spmv_opencl.cl			\
 	gordon/null_kernel_gordon.c		\
 	mult/xgemm.c				\
 	lu/xlu.c				\