[HER-1783] BloomFilter64bit bit-length bug prevents full bitfield from being used; premature saturation

* BloomFilter64bit.java
    include the split-to-subarrays (for larger bitfields) and round-up-to-power-of-2 (for performance) options previously in largely-redundant classes
    fit a number of problems with int/long overflow and bitwise ops
    add methods for reporting/testing
* BloomFilter.java
    add methods for reporting/testing
* BloomFilterTest.java, BloomFilter64bitTest.java
    more extensive tests, including two lengthy tests of default/oversized blooms usually disabled by renaming
* BloomFilter32bit.java, BloomFilter32bitSplit.java, BloomFilter32bp2.java, BloomFilter32bp2Split.java
    deleted as buggy or redundant
* BenchmarkBlooms.java
    move to test source dir
* BloomUriUniqFilter.java
    change to accept filter instance (rather than parameters) for added configuration flexibility
    fix comments
* BloomUriUniqFilterTest.java
    supply filter not paramters

engine/src/test/java/org/archive/crawler/util/BloomUriUniqFilterTest.java

@@ -32,6 +32,7 @@ import org.archive.crawler.datamodel.UriUniqFilter;
 import org.archive.modules.CrawlURI;
 import org.archive.net.UURI;
 import org.archive.net.UURIFactory;
+import org.archive.util.BloomFilter64bit;
 
 
 /**
@@ -53,8 +54,7 @@ implements UriUniqFilter.CrawlUriReceiver {
     protected void setUp() throws Exception {
         super.setUp();
         this.filter = new BloomUriUniqFilter();
-        this.filter.setExpectedInserts(2000);
-        this.filter.setHashCount(24); 
+        this.filter.setBloomFilter(new BloomFilter64bit(2000, 24));
         this.filter.afterPropertiesSet();
         this.filter.setDestination(this);
     }