REFACTORING
Red-black test code
NEW: PSStencilMapRB
NEW: PSStencilMapRB (REF)
NEW: test for red-black and periodic case
Test code for red-black in CUDA
NEW: Test code for red-black periodic case
NEW: Red-black (CUDA)
FIX: kernel inlining with red-black
FIX: register blocking  with red-black
WORKAROUND: Do not apply spatial offset cse in CUDA
FIX: handle multiple config files
NEW: MapRed and MapBlack