[BZ1069126] STS client pool changed to per deployment support

Conflicts:
	picketlink-jbas-common/src/main/java/org/picketlink/identity/federation/bindings/jboss/auth/SAML2STSCommonLoginModule.java
	picketlink-jbas-common/src/main/java/org/picketlink/trust/jbossws/jaas/JBWSTokenIssuingLoginModule.java
[BZ1117804] NPE fix
Merge pull request #99 from pskopek/STSPool-multiple-deps

SST Client Pool multiple deps