fix for GRAILS-4570, now allows Y or y
fix for GRAILS-4570, now allows Y or y

clockworkorange/grails-core,clockworkorange/grails-core,clockworkorange/grails-core,clockworkorange/grails-core,erdi/grails-core,clockworkorange/grails-core,erdi/grails-core,erdi/grails-core