Merge branch 'stable-1.7'

* stable-1.7:
  gwtorm 1.7.3
  Only bind LIMIT variable in SQL when dialect supports it
  Start 1.7.3 development
  gwtorm 1.7.2
  Make rollback() and commit() no ops when no transaction is active
  Fix conditional unit test skipping
  Start 1.7.2

Conflicts:
	pom.xml

Change-Id: Iefbfa04cfdcc399bf083a2bea4d0e7dc8c3b3447