Fix for OPENAM-2766, review CR-2159, remote notification listeners should attempt to de-register on shutdown.

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@6289 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Fix for OPENAM-2804, review CR-2175.

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@6290 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d