TAG CES-00-09-31 ***************** Tag in the main branch. Main changes: - Using the proper IS information to check the XOFF status of ROLs; - Using the Ready4Physics flag as an additional criterion for executing the PIXEL_UP/DOWN commands; - Calls to the MasterTrigger are synchronized; - Not triggering CHILD_INCONSISTENT error when the parent controller is exiting; - The BAD_HOST error is properly removed when the corresponding test is successful again.