Use ClassLoaderUtils to load resources/classes

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/trunk@1582715 13f79535-47bb-0310-9956-ffa450edef68
Removing old junit assertions

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/trunk@1582716 13f79535-47bb-0310-9956-ffa450edef68
Move schema loading etc. into XMLSec

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/trunk@1582717 13f79535-47bb-0310-9956-ffa450edef68