bug fix vary_psingle only true if pattempt_up. is
bug fix vary_psingle only true if pattempt_up. is

When restarting and vary_psingle was saved as true, even if
pattempt_update was false, pattempt_single was varied.

hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande