1. Removed the properties.Constants class from automatic generation, and

1. Removed the properties.Constants class from automatic generation, and
added Finn Bock's work on Property and Element Constants (currently unused
within application.)  The CVS version is now the official one.  (The
new constants are not currently being used within the application;
more work is needed.)

2. Build.xml has a new helper XSLTtoJAVA task separate from any of the build
processes to generate the Constants class above (although its output is
expected to fall behind what will be maintained in the CVS version.)

3. Some xml and xsl file renaming to make clearer the purposes of those files.

4. Removed a debug statement from PropertyList.java (forgot to remove from
yesterday's work).

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@197038 13f79535-47bb-0310-9956-ffa450edef68