LU-5275 lprocfs: remove last of non seq data structs and functions.

LU-5275 lprocfs: remove last of non seq data structs and functions.

This patch removes the rest of the non-seq file data structs
and functions. We rename the current seq data structs and
functions to match what is in the upstream lustre client.
Some functions in newer kernels are absent in RHEL6.5 and
SLES11SP3 kernels but lustre has equivalent functions so
they have also been renamed to match what exist in newer
kernels.

Change-Id: Iec17cd214864fe7c004eae8972397be326cdfee4
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Reviewed-on: http://review.whamcloud.com/12298
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>