rework the poms/shade/bundle/javadoc plugins to remove unnessary steps and warnings

git-svn-id: http://svn.terracotta.org/svn/ehcache@7669 b9324663-ca0f-0410-8574-be9b3887307d
only generate javadoc from ehcache-core like we used to

git-svn-id: http://svn.terracotta.org/svn/ehcache@7670 b9324663-ca0f-0410-8574-be9b3887307d
only generate javadoc from ehcache-core like we used to

git-svn-id: http://svn.terracotta.org/svn/ehcache@7671 b9324663-ca0f-0410-8574-be9b3887307d
simplified pom

git-svn-id: http://svn.terracotta.org/svn/ehcache@7672 b9324663-ca0f-0410-8574-be9b3887307d
merge -r 7668:7672 from trunk

git-svn-id: http://svn.terracotta.org/svn/ehcache@7673 b9324663-ca0f-0410-8574-be9b3887307d
don't do checkstyle here

git-svn-id: http://svn.terracotta.org/svn/ehcache@7674 b9324663-ca0f-0410-8574-be9b3887307d
don't do checkstyle here

git-svn-id: http://svn.terracotta.org/svn/ehcache@7675 b9324663-ca0f-0410-8574-be9b3887307d