Added missing jacc dependency in EAP61 kit

While implementing JAAS based authentication integrated with ModeShape, I discovered that the JAASProvider was not finding the JAAS Subject.  The reason is outlined in the following JIRA:

https://issues.jboss.org/browse/MODE-1270

However, the problem was still happening in JBoss AS 7.1.1.Final and EAP6.1 because the jacc APIs were missing from the org.modeshape:main module.  Adding the dependency to the module.xml solved the problem and everything worked as expected.