bcopy(str, new + oldsize, newsize);
(void)memcpy(new + oldsize, str, newsize);
save2str(str, old)	char *str, *old;{	char *new;	int newsize = strlen(str) + 1;	int oldsize = old ? strlen(old) + 1 : 0;	if ((new = salloc(newsize + oldsize)) != NOSTR) {		if (oldsize) {			bcopy(old, new, oldsize);			new[oldsize - 1] = ' ';		}		bcopy(str, new + oldsize, newsize);	}	return(new);}