Change scope of most/all default-scope i.e. package-scoped class members to protected, to make heritrix more friendly to third-party extensions. (I don't think there was ever an intent to limit the scope of any of these to package-only.)

commons/src/test/java/org/archive/util/fingerprint/LongFPSetCacheTest.java

@@ -55,7 +55,7 @@ public class LongFPSetCacheTest extends LongFPSetTestCase {
         return new TestSuite(LongFPSetCacheTest.class);
     }
 
-    LongFPSet makeLongFPSet() {
+    protected LongFPSet makeLongFPSet() {
         return new LongFPSetCache();
     }
 

commons/src/test/java/org/archive/util/fingerprint/MemLongFPSetTest.java

@@ -56,7 +56,7 @@ public class MemLongFPSetTest extends LongFPSetTestCase {
                 return new TestSuite(MemLongFPSetTest.class);
         }
 
-        LongFPSet makeLongFPSet() {
+        protected LongFPSet makeLongFPSet() {
                 return new MemLongFPSet();
         }