add missing overloads for vec_orc:

vector double vec_orc (vector bool long long, vector double);

vector double vec_orc (vector double, vector bool long long);

vector float vec_orc (vector bool int, vector float);

vector float vec_orc (vector float, vector bool int);

and vec_nand:

vector double vec_nand (vector double, vector double);

vector float vec_nand (vector float, vector float);