LYRA2-REF: Accept extra CFLAGS and a main.c when building the sse2 version.
LYRA2-REF: Accept extra CFLAGS and a main.c when building the sse2 version.

eggpi/lyra2,eggpi/lyra2,eggpi/lyra2,guilherme-pg/lyra2,guilherme-pg/lyra2,guilherme-pg/lyra2