fix http://jira.grails.org/browse/GPQUARTZ-102?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel

fix http://jira.grails.org/browse/GPQUARTZ-102?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel

update to RC6