METAGEN-92 Adding ability to process JPA 2.0 and 2.1 configuration files. 2.0 configuration files will be transformed by an EventReader to 2.1
METAGEN-92 Fixing wrong warning message
METAGEN-92 removing '// $Id:$', reminder of svn times :-)
METAGEN-92 Renaming XmlParser to better reflect its function
METAGEN-92 Some clean-up (comments, headers, unused imports, typos)