Delete ehcache-2.9.0 tag to retag.

git-svn-id: http://svn.terracotta.org/svn/ehcache@9175 b9324663-ca0f-0410-8574-be9b3887307d
Tag ehcache-2.9.0 from 4.2.0-rc branch

git-svn-id: http://svn.terracotta.org/svn/ehcache@9176 b9324663-ca0f-0410-8574-be9b3887307d
TABINF-3586 : switching to slf4j 1.7.7

git-svn-id: http://svn.terracotta.org/svn/ehcache@9177 b9324663-ca0f-0410-8574-be9b3887307d
TABINF-3586 : merging from trunk

git-svn-id: http://svn.terracotta.org/svn/ehcache@9178 b9324663-ca0f-0410-8574-be9b3887307d
TABINF-3586 : merging from trunk

git-svn-id: http://svn.terracotta.org/svn/ehcache@9179 b9324663-ca0f-0410-8574-be9b3887307d