How can I reload security users roles file without restarting JBoss EAP 5?

Issue

• While setting Kerberos SSO and using .properties files to authenticate users, want to add new users to .properties file but those changes are only updated when the server is restarted. Is there a way to have it without having to restart the server, is there a way to do it from jmx console ?

       <login-module code="org.jboss.security.auth.spi.UsersRolesLoginModule" flag="required">
                  <module-option name="password-stacking">useFirstPass</module-option>
                  <module-option name="usersProperties">props/spnego-users.properties</module-option>
                  <module-option name="rolesProperties">props/spnego-roles.properties</module-option>
                  <module-option name="debug">true</module-option>
       </login-module>

• How to detect the dynamic updates in roles.properties in container's conf/props directory without restarting the server.