lbnode print v bug fixed
new coupling scheme
some fixes for compling with shanchen but not ready yet
merge with shanchen branch finished
Merge branch 'shanchen' of /home/sega/espressoSC2 into multigpu
changed cuda_safe_mem to cuda_check_erorrs
Merge branch 'SC-multi-GPU' of https://github.com/Marcello-Sega/espresso into shanchen

Conflicts:
	src/lbgpu.cu
first step for mem alloc successful