LU-881 utils: running bumped w/o lock

LU-881 utils: running bumped w/o lock

bumped_running accessed without lock

Multiple threads man increment shared_data->running until
the setting of bumped_running becomes visible.

Also, use "bool" -- First released in Issue 6 of POSIX spec:
   included for alignment with the ISO/IEC 9899:1999 standard

When inserting #include <stdbool.h>, it was noticed that stdio.h was
included twice.  Collected and ordered system headers so that
won't happen again.

Signed-off-by: Bruce Korb <bruce_korb@xyratex.com>
Change-Id: I45891e125221d29f72efee38580a56888c3a266f
Reviewed-on: http://review.whamcloud.com/1749
Tested-by: Hudson
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: wangdi <di.wang@whamcloud.com>