Fixed recent found bugs

-Fixed: addAll with non Specific Collections was crashing lists.
-Fixed/Refactor: Clear and trim implementation was all over the place
-Fixed: Wrappers toString/hashCode/equals function wasn't implemented
-Added: Tests for addAll bug
-Refactor: Did small code style cleanups as I was fixing bugs.

src/builder/resources/speiger/assets/collections/templates/sets/OpenCustomHashSet.template

@@ -354,14 +354,17 @@ public class CUSTOM_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERIC_T
 	
 	@Override
 	public void clearAndTrim(int size) {
-		if(nullIndex <= size) {
+		int request = Math.max(minCapacity, HashUtil.nextPowerOfTwo((int)Math.ceil(size / loadFactor)));
+		if(size >= request) {
 			clear();
 			return;
 		}
-		nullIndex = size;
-		mask = nullIndex - 1;
+		nullIndex = request;
+		mask = request-1;
 		maxFill = Math.min((int)Math.ceil(nullIndex * loadFactor), nullIndex - 1);
-		keys = NEW_KEY_ARRAY(nullIndex + 1);
+		keys = NEW_KEY_ARRAY(request + 1);
+		this.size = 0;
+		containsNull = false;
 	}
 	
 	private void ensureCapacity(int newCapacity) {