[axiom] [axis2] getChildrenWithName() erroneous behavior

Hi all:

Currently OMElement.getChildrenWithName(QName) uses the 
OMChildrenQNameIterator to walk the list of children and return matches. 
  Here's the problem - if there is no namespace (or no localName... 
luckily that part isn't possible), the iterator will happily match ANY 
element with a matching localName.  So for instance when we do this:

config_element.getChildrenWithName(new QName("transportSender"))

We'll get both <axisCfg:transportSender> and 
<extension:transportSender>.  This is bad.  The above API call SHOULD 
only match <transportSender> in no namespace.

XML is namespace-aware, and our code should be too.  I'm going to change 
getChildrenWithName() to match using QName.equals().

If people really want a localname-only match, we can add something like 
OMElement.getChildrenWithLocalName(String), but it should be an 
explicitly different API.

Thoughts?

--Glen