All components that deal with authentication now accept a varargs array
of credentials:

1. CentralAuthenticationSerivce#createTicketGrantingTicket()
2. CentralAuthenticationSerivce#grantServiceTicket() (renew form only)
3. CentralAuthenticationSerivce#delegateTicketGrantingTicket()
4. AuthenticationManager

The use of varargs Credentials provides call compatibility with 3.x
components while supporting the requisite inputs (multiple credentials)
for multi-factor use cases.

LPPE - Enabled ldaptive integration; first pass

Removed the hard reference to the psw policy configuration in the result object and computed results locally for easier serialization.

First pass at LPPE, converted test configuration to use namespaces, and configuerd ldaptive password policy beans.

Add allowMultiplePrincipalAttributeValues flag (default false) to handle
duplicate principal ID attribute values.
Misc code cleanup.

This component will support attribute release machinery in CAS including
CredentialToPrincipalResolver components.

Unit tests require the following environment/devleoper-specific files to
exist in the module root directory:

 1. ldaptive.properties
 2. credentials.properties
 3. extraConfigContext.xml

There are sample versions of each file for reference.

upgrade to pac4j release (1.4.0), make ClientCredentialsToPrincipalResolver inheritable, store 'raw data' to be send to CAS client applications.

The identifiers generator for OpenIdService must be defined explicitely when using the OpenID support and not always

Like for other external protocols, the classes to serialize through Kryo are to be declared explicitely

Conflicts:
	cas-server-core/src/main/java/org/jasig/cas/CentralAuthenticationService.java
	cas-server-core/src/main/java/org/jasig/cas/CentralAuthenticationServiceImpl.java
	cas-server-core/src/main/java/org/jasig/cas/authentication/AbstractAuthenticationManager.java
	cas-server-core/src/main/java/org/jasig/cas/authentication/AuthenticationManagerImpl.java
	cas-server-core/src/main/java/org/jasig/cas/authentication/DirectMappingAuthenticationManagerImpl.java
	cas-server-core/src/main/java/org/jasig/cas/authentication/LinkedAuthenticationHandlerAndCredentialsToPrincipalResolverAuthenticationManager.java
	cas-server-core/src/main/java/org/jasig/cas/authentication/handler/AuthenticationHandler.java
	cas-server-core/src/main/java/org/jasig/cas/remoting/server/RemoteCentralAuthenticationService.java
	cas-server-core/src/main/java/org/jasig/cas/web/flow/AuthenticationViaFormAction.java
	cas-server-core/src/test/java/org/jasig/cas/CentralAuthenticationServiceImplTests.java
	cas-server-core/src/test/java/org/jasig/cas/authentication/AuthenticationManagerImplTests.java
	cas-server-core/src/test/java/org/jasig/cas/authentication/handler/support/SimpleTestUsernamePasswordAuthenticationHandler.java
	cas-server-core/src/test/java/org/jasig/cas/authentication/handler/support/SimpleTestUsernamePasswordHandlerTests.java
	cas-server-core/src/test/java/org/jasig/cas/remoting/server/RemoteCentralAuthenticationServiceTests.java
	cas-server-core/src/test/resources/core-context.xml
	cas-server-integration-restlet/src/main/java/org/jasig/cas/integration/restlet/TicketResource.java
	cas-server-support-ldap/src/main/resources/deployerConfigContext.xml
	cas-server-support-openid/src/test/java/org/jasig/cas/support/openid/web/flow/OpenIdSingleSignOnActionTests.java
	cas-server-support-trusted/src/test/java/org/jasig/cas/adaptors/trusted/web/flow/PrincipalFromRequestRemoteUserNonInteractiveCredentialsActionTests.java
	cas-server-support-trusted/src/test/java/org/jasig/cas/adaptors/trusted/web/flow/PrincipalFromRequestUserPrincipalNonInteractiveCredentialsActionTests.java
	cas-server-support-x509/src/main/resources/deployerConfigContext.xml
	cas-server-support-x509/src/test/java/org/jasig/cas/adaptors/x509/web/flow/X509CertificateCredentialsNonInteractiveActionTests.java
	cas-server-webapp/src/main/webapp/WEB-INF/deployerConfigContext.xml

CAS-1245: update to the latest dependencies

Conflicts:
	cas-server-uber-webapp/NOTICE

CAS-1286: Extract the OAuth client support in its own module and upgrade to pac4j

Handle properly required additionnal HTTP action from pac4j

After Misagh's code review