renamed:    laplace_solver_openacc.c -> laplace_openacc.c
	renamed:    laplace2d_acc_ver_cudacast.c -> laplace_openacc_cudacast.c
	new file:   laplace_serial.c
	modified:   makefile
	modified:   rlapacc.sh
	modified:   subg.pbs
Merge branch 'master' of https://github.com/lsuhpchelp/loniworkshop2014