stddoclet: Enhance Javadoc to take an XML file instead of command line parms

Name: rlT66838 Date: 06/05/2000
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

If the JavaDoc tool had an XML configuration file as an alternative (or in
addition to) the command line parameters, it would be a lot easier to create
customised generations. The problem at the moment is that quotes as part of
the html for -header, -footer etc make the command string unreadable.

Maybe a {@date} replacement variable too would be useful.
(Review ID: 105730)
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