pathfinder: load kernel from the file $LOAD_KERNEL
pathfinder: give proper size parameters to the kernel
pathfinder: produce timing info on only the CL part (initialization takes a lot of time)
pathfinder: disable outputting data; enable with -DBENCH_PRINT
pathfinder: added a rule for building kernels.clamped.optimized.ptx
Merge branch 'master' into erkkise/smartptrptr