Dropping content from _preview branch given the issue in Jenkins

git-svn-id: http://svn.terracotta.org/svn/ehcache@8539 b9324663-ca0f-0410-8574-be9b3887307d
Tag ehcache-2.8.0 from 4.1.0-rc branch

git-svn-id: http://svn.terracotta.org/svn/ehcache@8540 b9324663-ca0f-0410-8574-be9b3887307d
Delete ehcache-2.8.0 tag to retag.

git-svn-id: http://svn.terracotta.org/svn/ehcache@8541 b9324663-ca0f-0410-8574-be9b3887307d
Tag ehcache-2.8.0 from 4.1.0-rc branch

git-svn-id: http://svn.terracotta.org/svn/ehcache@8542 b9324663-ca0f-0410-8574-be9b3887307d