[SPARK-4937] Normalizes conjunctions and disjunctions to eliminate common predicates

This PR is a simplified version of several filter optimization rules introduced in #3778. Newly introduced optimizations include:

1. `a && a` => `a`
2. `a || a` => `a`
3. `(a || b || c || ...) && (a || b || d || ...)` => `a && b && (c || d || ...)`

The 3rd rule is particularly useful to optimize the following query, which is planned into a cartesian product

```sql
SELECT *
  FROM t1, t2
 WHERE (t1.key = t2.key AND t1.value > 10)
    OR (t1.key = t2.key AND t2.value < 20)
```

to the following one, which is planned into an equi-join:

```sql
SELECT *
  FROM t1, t2
 WHERE t1.key = t2.key
   AND (t1.value > 10 OR t2.value < 20)
```

The example above is quite artificial, but common predicates are likely to appear in real life complex queries (like the one mentioned in #3778.