ENG-185 Make Ehcache.replace(Element) throw when configured as an eventual consistent cache

git-svn-id: http://svn.terracotta.org/svn/ehcache@7913 b9324663-ca0f-0410-8574-be9b3887307d
ENG-185 merge 7913 from ehcache-2.7.x

git-svn-id: http://svn.terracotta.org/svn/ehcache@7914 b9324663-ca0f-0410-8574-be9b3887307d
ENG-185 merge 7913 from ehcache-2.7.x

git-svn-id: http://svn.terracotta.org/svn/ehcache@7915 b9324663-ca0f-0410-8574-be9b3887307d