Testing & simplification refactoring

This branch is a WIP for more comprehensive testing in poky and for successful builds.

 - [x] Unit testing of kv.jdbc
 - [x] Integration testing of kv.jdbc
 - [x] Successful travis builds of the unit tests & removal of deprecated tests
 - [x] Move kv.jdbc/jdbc-* to jdbc.util; same with tests

Second tier:
 - [x] quiet c3p0 logging
 - [ ] configure and add basic app logging
 - [x] remove the memcache interface to simplify