CR-2049 OpenAM-2683 Oauth2 invalid_client should return a 400 error code

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@5939 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
CR-2046 AME-2028 remove the oauth2 ldif files and the references to them

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@5940 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d