Add missing security preamble.
Merge pull request #34 from bharat/3.3/develop

Add missing security preamble.
Don't add . and .. directories to the dynamic module list

This was creating a recursive module directory structure,
which may have unexpected results.
Fix unittest module loading to support kohana/core#522

The unittest bootstrapping anyway needs to be reviewed -
but for now just get the module loading defined to work with
the current system to get the build green again.