RFR 8010325 : Remove hash32() method and hash32 int field from java.lang.String

[Brent Christian]

Hi,

Please review my fix for 8010325.  Some background:

The alternative string-hashing implementation[1] added to 
java.lang.String a new public method, hash32(), as well as a new private 
int field to cache the alternate hash value.

Following 8005698 [2] and 8005704 [3], the new method and field in 
String are no longer used.

By updating a couple lines in Hashtable/HashMap/WeakHashMap, the 
internal sun.misc.Hashing class can also be removed.

The webrev is here:
http://cr.openjdk.java.net/~bchristi/8010325/webrev.00/

Thanks,
-Brent

1. http://hg.openjdk.java.net/jdk8/jdk8/jdk/rev/43bd5ee0205e
2. http://bugs.sun.com/view_bug.do?bug_id=8005698
3. http://bugs.sun.com/view_bug.do?bug_id=8005704