HSEARCH-1549 Creating package org.hibernate.search.testsupport.setup and moving classes which are needed to setup Search into it.
HSEARCH-1549 Creating sub-packages under  org.hibernate.search.testsupport to structure some of the test helpers classes into categories
HSEARCH-1549 Moving the remaining general helpers into testsupport
HSEARCH-1549 Moving the helper tests under util.impl to match the location of the classes they test