remove sched.h dependancies from fs/

There's a large (90kb uncompressed) patch at ftp://ftp.kernel.org/pub/linux/kernel/people/davej/patches/2.5/misc/sched-cleanup-2.diff.gz which removes the inclusion of sched.h from a majority of fs/
It achieves this by moving CURRENT_TIME to time.h, and including that instead.
(time.h pulls in a thousand times less files than sched.h)

The only remaining users of sched.h in fs/ with this patch applied are various users of fields from current->, and those who want jiffies.

(Linus, I know you prefer these things sent directly, if this sounds good,
and Al likes it, I'll push it to you inline).

Dave.

Dave Jones.                    http://www.codemonkey.org.uk
SuSE Labs.