[JBCACHE-802] SQLExceptions generated in JDBCCacheLoader hides the original Exception which is wrong! Changed so that the original exceptions are thrown back. JDBCCacheLoaderTest improved so that with reasonable little effort, you can run the tests getting DataSource from AS. Added jndi.properties to help here, but commented out for general purpouse. Added table properties for Hypersonic to cache-jdbc.properties. Client AS library missing as I'm temporarily using jbossall-client.jar. This should be sorted soon.