Rafactor the XMLAttributePersistenceManager to avoid xml parser issues.

XMLAttributePersistenceManager has issues when reading/writing to files that contain spaces in their pathname.

When reading files with spaces, you get

Caused by: java.io.FileNotFoundException: X:\cvs\jboss-public\jboss-4.0\build\output\jboss-4.0.3RC1\server\default\tmp\XmlApm59286Test%20.dir\bananarama.xml
at org.jboss.net.protocol.file.FileURLConnection.connect(FileURLConnection.java:80)
at org.jboss.net.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:89)
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at javax.xml.parsers.DocumentBuilder.parse(Unknown Source)
at org.jboss.system.pm.XMLAttributePersistenceManager.parseXmlFile(XMLAttributePersistenceManager.java:776)
at org.jboss.system.pm.XMLAttributePersistenceManager.load(XMLAttributeP

This is related to

http://jira.jboss.com/jira/browse/JBAS-363
http://jira.jboss.com/jira/browse/JBAS-1545