Merge branch 'stable-1.7'

* stable-1.7:
  gwtorm 1.7.1
  Add transaction support for Jdbc dialects
  Fix a bug where "LIMIT ?" in queries was omitted in the generated query
  Drop "bar" tables in test setup
  Start 1.7.1 development

All the changes on stable-1.7 already exist on master.
Merged with `-s ours`.

Change-Id: I28c4a3f5757b85f0bb17ec2089e7682c1bbdb1bb