Patch to support OpenEJB 3.2 API change

The Arquillian Embedded OpenEJB 3.1 container adapter works with OpenEJB 3.2 with the exception of one field reference. The public field AppInfo#jarPath was renamed to AppInfo#path. Attached is a patch which will determine the correct field name through reflection so both APIs can be supported.

Keep in mind that OpenEJB 3.2 is still unreleased, so this is an enabling change (enables people to use it), and may be unnecessary if we find out why the field name was change. Or, perhaps, this issue will lead to an upstream change that makes this patch unnecessary. Either way, it would be nice to be able to use OpenEJB 3.2 as it supports JPA 2.