fixed a boundary bug in the init.c
released almost all debugging lines(except the ones in the kernel),
worked fine with both distributions
uncommented all necessary debugging lines within the kernel;
worked fine.
using an updated random material picking function; worked fine.
removed all debugging comments in CUDA_Driver.cu; recovered the
loop within main.c
Merge branch 'temp' into RSBench_CUDA

Conflicts:
	src/CUDA_Driver.cu
	src/init.c