HSEARCH-1120 Added a hibernate search module for EAP 6.1.0.Alpha1

The EAP 6.1.0 module was added alongside the existing AS 7.1.1 kit (to avoid breaking any clients which use this module currently).

However, because EAP 6.1.0.Alpha1 dist is not available in any Maven repository I was unable to add an integration test for the new kit. Rather, I tested it by deploying it manually in ModeShape's kit and running ModeShape's integration tests.

When https://hibernate.atlassian.net/browse/HSEARCH-1286 is fixed, an additional integration test can be added which validates the module.