LU-6245 libcfs: remove typedefs in libcfs source code

LU-6245 libcfs: remove typedefs in libcfs source code

Convert most of the typdefs used in libcfs source code
to a standard struct. Only a few left which will be
completely removed in later patches. The typedef
function pointers will be the only ones remaining.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Change-Id: I5c9efa10d23904c456154d5afbb80c4197e91641
Reviewed-on: http://review.whamcloud.com/17202
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>