Upper casing classes in Java-support

[Rod Widdowson]

Since Ian has been asking about this:

My investigations into the metadata parsers has led me to the code in
net.shibboleth.utilities.java.support.httpclient.  This has a whole bunch of
classes with old style camel case names.  Given I'm in the area it behoves
me to make the change.  But this is in java-parent, so I am asking around
before I do this.

Any objections?  If not I'll plan to do this in the next day or two, maybe
this weekend.

While I'm here I'll note that net.shibboleth.utilities.java.support.net has
a smattering of Uri and Url named classes, whilst
net.shibboleth.utilities.java.support.net has both XMLParserException and
XmlSpace and XmlConstants, as well as DomTypeSupport.

Shall I nail them all at the same time? 

Rod