Review comment updates to initial CREST context migration

git-svn-id: https://svn.forgerock.org/openig/branches/http-framework@655 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
Add support for handling thrown ResponseException from root Handler

git-svn-id: https://svn.forgerock.org/openig/branches/http-framework@656 dbb9e58e-28e6-4ce0-90e8-f11d9605b710