memcpy_D2A
extern void memcpy_D2A ANSI((void*, const void*, size_t));
#define Bcopy(x,y) memcpy_D2A(&x->sign,&y->sign,y->wds*sizeof(ULong) + 2*sizeof(int))
memcpy_D2A(void *a1, void *b1, size_t len)
