[PATCH] sched: implement staircase scheduler yaf fix

While it annoys even me to keep posting fixes for SD, it is nice that fixing these bugs improves the behaviour further. This change causes noticeable improvements with loads that fork (ie make and friends). Thanks Al! Andrew please apply. --- Management of time_slice sharing across fork was

[PATCH] sched: implement staircase scheduler yaf fix

While it annoys even me to keep posting fixes for SD, it is nice that fixing these bugs improves the behaviour further. This change causes noticeable improvements with loads that fork (ie make and friends). Thanks Al! Andrew please apply. --- Management of time_slice sharing across fork was