Compile kernel offline support added to Makefiles for opencl versions

...st/VISC/parboil/benchmarks/lbm/src/opencl_nvidia/Makefile

...l/benchmarks/lbm/src/opencl_nvidia/kernel_offline.nvptx.s

...test/VISC/parboil/benchmarks/lbm/src/opencl_nvidia/main.c

...st/VISC/parboil/benchmarks/sgemm/src/opencl_base/Makefile

...l/benchmarks/sgemm/src/opencl_base/kernel_offline.nvptx.s

...est/VISC/parboil/benchmarks/sgemm/src/opencl_base/main.cc

...t/VISC/parboil/benchmarks/spmv/src/opencl_nvidia/Makefile

.../benchmarks/spmv/src/opencl_nvidia/kernel_offline.nvptx.s

...est/VISC/parboil/benchmarks/spmv/src/opencl_nvidia/main.c

.../VISC/parboil/benchmarks/stencil/src/opencl_base/Makefile

...benchmarks/stencil/src/opencl_base/kernel_offline.nvptx.s

...st/VISC/parboil/benchmarks/stencil/src/opencl_base/main.c