If the WS-SC client does not send a SOAPAction, degrade to the old DOM based processing.

Conflicts:
	rt/ws/security/src/main/java/org/apache/cxf/ws/security/policy/interceptors/SecureConversationInInterceptor.java
	systests/ws-security/src/test/java/org/apache/cxf/systest/ws/wssc/WSSCTest.java
Recording .gitmergeinfo Changes