* Makefile.am: Add HashSet.java and java/lang/ref classes.
Remove BasicMapEntry.java and Bucket.java.
* Makefile.in: Rebuilt.
* java/util/HashMap.java: Rewritten.
* java/util/HashSet.java: Imported from classpath.
* java/util/WeakHashMap.java: Imported from classpath.
* java/util/Hashtable.java: Rewritten based on new HashMap code.
* java/util/Bucket.java: Deleted.
* java/util/BasicMapEntry.java: Deleted.
* java/util/Collections.java (search): Use a for-loop, not iterator
hasNext().
(copy): Use a for-loop. Throw an IndexOutOfBoundsException if run out
of elements in source.
(max): Use a for-loop.
(min): Ditto.
(reverse): Keep track of positions instead of using Iterator's
nextIndex() and previousIndex().
(shuffle(List)): Initialize defaultRandom if required using
double-check thread safety idiom. Call two-argument shuffle method
using defaultRandom.
(defaultRandom): New field.
(shuffle(List, Random)): Use a for-loop. Keep track of pos instead
of using previousIndex() and nextIndex().
(singletonMap(iterator)): Use a HashMap.Entry, not BasicMapEntry.
* java/util/AbstractCollection.java (toString): Use a StringBuffer.
* java/util/AbstractMap.java (toString): Use StringBuffer.
* java/lang/ref/PhantomReference.java: Imported from classpath.
* java/lang/ref/SoftReference.java: Ditto.
* java/lang/ref/Reference.java: Ditto.
* java/lang/ref/WeakReference.java: Ditto.
* java/lang/ref/ReferenceQueue.java: Ditto.
From-SVN: r38183
