Enabling getSession to detect destroyed Sessions and respond accordingly.

git-svn-id: https://svn.forgerock.org/openam/branches/AME-3423@10289 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
AME-4298 - Create Session object and store in Session.sessionTable when receiving notification of session destruction from home server

git-svn-id: https://svn.forgerock.org/openam/branches/AME-3423@10290 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
AME-4298 - Create Session object and store in Session.sessionTable when receiving notification of session destruction from home server

git-svn-id: https://svn.forgerock.org/openam/branches/AME-3423@10291 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d