[WIP] Rails 4.2 support for SQlite3

- This is still WIP
- ~~3~~ ~~2~~ **0** tests still failing on SQlite3 https://travis-ci.org/jruby/activerecord-jdbc-adapter/jobs/37902181
- 10 failures, 58 errors on MySQL
- I just want to see all the failures on travis.