LU-5478 osd: get rid of obd_* typedefs

LU-5478 osd: get rid of obd_* typedefs

We have a bunch of typedefs for common things that made no sense
and hid the actual type from plain view.
Replace them with proper uXX or sXX types.
Exception is in lustre_idl.h and lustre_ioctl.h where
they are replaced with __uXX and __sXX to be able to be included
in userspace

patch 7 in series: modify osd-ldiskfs/osd-zfs

Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Change-Id: I9809d57ae8665fb7a932645cc2258d3adc1a0ff1
Reviewed-on: http://review.whamcloud.com/13149
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>