make sched_class.task_new == NULL a 'default method', this allows the removal of task_rt_new. Signed-off-by: Ingo Molnar <mingo@elte.hu>
add kernel/sched_rt.c: SCHED_FIFO/SCHED_RR support. The behavior and semantics of SCHED_FIFO/SCHED_RR tasks is unchanged. Signed-off-by: Ingo Molnar <mingo@elte.hu>