Make sure we can process a SAML Signature KeyInfo which uses a SecurityTokenReference


Conflicts:
	src/main/java/org/apache/ws/security/processor/SAMLTokenProcessor.java
	src/main/java/org/apache/ws/security/saml/SAMLUtil.java
	src/main/java/org/apache/ws/security/saml/ext/AssertionWrapper.java

git-svn-id: https://svn.apache.org/repos/asf/webservices/wss4j/branches/1_6_x-fixes@1547348 13f79535-47bb-0310-9956-ffa450edef68