[PATCH] Bug fix for java.util.Vector

[Dalibor Topic]

hi,

this patch fixes some problems with kaffe's java.util.Vector
implementation. I found them while playing around with the Vector
examples from Java Class Libraries Second Edition Vol.1 Supplement book.

One java.util.Vector example from the book is still broken, subList. I don't 
have a fix for that, since I don't understand the AbstractList implementation 
well enough to come up with a solution.

Patch and change log entry are attached.

cheers,

Dali
 
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	* libraries/javalib/java/util/Vector.java:
	(elementAt) Updated exception message.
	(indexOf) Fixed NullPointerException.
	(toString) Fixed string conversion of nulls.