WIP - target Gitlab 6.1

* Add certificate/key for integration testing
* Build 1.9.3-p448 per Gitlab requirements.md
* Add no-ri/no-rdoc options, per installation.md,
  also speeds up convergence.
* Re-order steps per installation.md
* Add autocrlf option to gitconfig, per installation.md
* Update mysql privileges per database.md

TODO:

* Gitlab init not working on RHEL 6
* Update README.md