Rename Lyra2.c to lyra2.c
Rename Lyra2.h to lyra2.h
Rename Lyra2RE.c to lyra2re.c
Rename Lyra2RE.h to lyra2re.h
Rename Sponge.c to sponge.c
Rename Sponge.h to sponge.h
Rename Lyra2.cl to lyra2.cl
Rename Lyra2RE.cl to lyra2re.cl