chrt: add support for SCHED_RESET_ON_FORK

chrt: add support for SCHED_RESET_ON_FORK

From 9262c9832134f8a33ac2ea2854dc6d20acc712d1 Mon Sep 17 00:00:00 2001
From: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Date: Tue, 2 Feb 2010 16:57:23 +0100
Subject: [PATCH] Add support for SCHED_RESET_ON_FORK to chrt

SCHED_RESET_ON_FORK has been added in 2.6.31. If a thread has this flag
set, chrt reports "unknown" policy, which is confusing.

The patch adds support for this new flag. It will (can) only be applied
to SCHED_FIFO or SCHED_RR, so there's no need to catch the other
scheduling policies.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>