be: Do not set both arch_irn_flag_not_scheduled and arch_irn_flag_schedule_first on new nodes.
be: Do not set both arch_irn_flag_not_scheduled and arch_irn_flag_schedule_first on new nodes.

jonashaag/libfirm,jonashaag/libfirm,MatzeB/libfirm,libfirm/libfirm,MatzeB/libfirm,MatzeB/libfirm,MatzeB/libfirm,jonashaag/libfirm,libfirm/libfirm,jonashaag/libfirm,jonashaag/libfirm,libfirm/libfirm,libfirm/libfirm,libfirm/libfirm,MatzeB/libfirm,MatzeB/libfirm,jonashaag/libfirm,jonashaag/libfirm,MatzeB/libfirm