find structure seeds with user specified mesa band colors. could be useful for seedcracking/seedfinding
terracottaSim117.c uses an optimization that makes it a lot faster, but has a very small chance to miss structure seeds terracottaSim117NOOPT.c dosent have that optimization, so it may be useful for crosschecking
both are multithreaded. compile with gcc .c -o -Ofast -lpthread