OPENIG-246 OpenIG in reverse proxy configuration fails half the time with http code 501
* Request.getEntity() never returns null, so it can't be used to determine if the request had a content or not
* Added an isEmpty() method for this purpose
* Updated HttpClient to use Entity.isEmpty()

git-svn-id: https://svn.forgerock.org/openig/trunk@461 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
[maven-release-plugin] prepare branch 3.0

git-svn-id: https://svn.forgerock.org/openig/trunk@462 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.forgerock.org/openig/trunk@464 dbb9e58e-28e6-4ce0-90e8-f11d9605b710