More flagging of Land values. Also use less than for tests of non-terrain, instead of "and $FF00 = 0". Saves a couple of ops, which actually matters a small amount in a few places.

#include <stdio.h>
#include "openalbridge.h"

int main (int argc, int **argv) {

    openal_init();

    openal_close();

    return 0;
}