java.util.Hashtable: difference between JDK and kaffe

[Ito Kazumitsu]

In message "Re: java.util.Hashtable: difference between JDK and kaffe"
    on 01/01/26, Ito Kazumitsu <ito.kazumitsu at hitachi-cable.co.jp> writes:

> Attached patch solves this problem.

It is natural that we should assume obj1.equals(obj2) is
equivalent to obj2.equals(obj1).  But Xalan's
org.apache.xalan.xpath.xml.StringKey.java breaks
this symmetric relation although its purpose may be
efficiency.

Chaging java.util.Hashtable is an ad hoc solution
but anyway it works.